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The Best 5 Mountain Bike Knee Pads of 2024

We tested models from Fox Racing, 7iDP, Leatt, Troy Lee Designs, and more to find the best mountain bike knee pads
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Best Mountain Bike Knee Pads Review
Credit: Laura Casner
By Pat Donahue & Jeremy Benson  ⋅  Apr 30, 2024

The Best Mountain Bike Knee Pads for 2024


Looking for a fresh pair of mountain bike knee pads? You're in luck. We purchased nearly two dozen of the most intriguing pads on the market to test and feature 19 pairs in this side-by-side review. There are hundreds of options available from a huge number of manufacturers, and finding the appropriate pair for your needs can be difficult. We tested these models for an absurd amount of time on daily trail rides as well as long weekends at our favorite bike parks. We rode each pair in a huge range of weather conditions and terrain types prior to ranking them on a handful of key performance metrics. This review will help guide you to the ideal set of pads for your wallet and riding style.

There are many disciplines within mountain biking. Whether you live for long, rowdy downhills or logging heavy miles in the alpine, you want the best and most sensible protection for your next mountain bike ride. Our crew of MTB fanatics have ridden and reviewed the best bike gear available, from the top mountain bikes to accessories like knee pads and gloves. We also have in-depth reviews covering the best helmets available, both half-shell bike helmets and top-rated downhill helmets for aggressive riding.

Editor's Note: We updated our mountain bike knee pad review on April 30, 2024, to include information on how we tested and to offer some additional picks in our award section.

Top 19 Mountain Bike Knee Pads

Displaying 1 - 19 (scroll right)
 
Awards    Top Pick Award
Another Great Mid-Duty Knee Pad
Top Pick Award
Best for Comfort
Top Pick Award
Best Blend of Protection and Pedal-Friendliness
Editors' Choice Award
Best Overall Mountain Bike Knee Pads
       Top Pick Award
Best for Downhill Riding
  Top Pick Award
 
Price $34.69 at Amazon
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$49.25 at Amazon
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$90 List
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$122 List
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$150.00 at Backcountry$129.00 at Backcountry
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$119.96 at Evo
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$115 List
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Pros Very lightweight, excellent when pedaling, sleek and slimExceptionally pedal friendly, comfortable, lightweightExtremely pedal-friendly, lightweight, comfortableExcellent fit, pedal-friendly, sleek design, just enough protectionSupremely comfortable, dialed fit, impressive quality of construction and materialsWisely-placed protection, dialed fit, reasonable price, pedal-friendly for protection levelProtective, comfortable, retains nice pedaling abilitiesExceptionally comfortable, great balance of protection and pedal-friendliness, stylishNice balance of protection and comfort, price, widely availableLight, breathable, comfortable sleeve materialAbove-average protection, light, relatively low-profileBurly, aggressive, confidence-inspiringEnough protection for aggressive shredding, reasonably pedal-friendlyGreat fit, high levels of comfort, excellent protectionExcellent fit, burly protection, Exceptionally comfortableExcellent protection, built-to-last, aggressiveHigh levels of protection, quality constructionHigh levels of protection, quality constructions and materials, secure fitLoads of protection, adjustable
Cons Knee sleeve a little short, lacks protection, durability concernsNot very protective, soft material may tear easilyMinimal protection, durability concernsNot for riders who want to push their limits, narrower range of applicationsMore expensive, long sleeve isn't ideal for hot conditionsA little clammy, sleeve could be longer at topHeavy, not the best for long ridesExpensive, durability concerns, quirky fitFit issues, not as pedal-friendly or as robust as other optionsClumsy armor patch, slightly irritating while pedalingVery long sleeve, harder to put onBulky in the saddle, poor articulationQuirky fit, tough to put on/take off, clammy in warm weatherWarm, somewhat limited range of useWarm, not ideal for serious amounts of pedalingQuirky fit, not particularly pedal-friendly, expensiveSloppy fit, pads shift around when pedalingHeavy, not the best for substantial amounts of pedalingPoor pedaling performance, uncomfortable, heavy
Bottom Line A lightweight knee pad that delivers in the saddle but doesn't offer much in the way of protectionA lightweight and extremely pedal-friendly knee pad with a minimalist approachMinimalist knee pads for riders who prioritize a high level of pedal-friendliness over protectionA sensible option for trail and all-mountain riders who want to retain a high level of pedal-friendlinessUltra-comfortable pads that deliver an exceptional fit and quality constructionA high-quality and versatile knee pad that splendidly blends protection and pedal-friendlinessA perfect blend of substantial protection, supreme comfort, and respectable pedaling abilitiesA high-end knee pad that delivers an above-average level of comfortA well-rounded knee pad that effectively balances light protection and pedal-friendlinessA lightweight and airy knee pad suited for light-to-mid duty trail ridingProtective knee pads that pedal well enough and have an exceptionally long sleeveAn aggressive set of knee pads for enduro racing or general sendingGood-looking, shred-worthy knee pads that are somewhat challenging to put on and take off due to a tight fitSupremely comfortable knee pads that blend high levels of protection with a dialed fitA dialed set of pads that boast excellent comfort levels and the perfect amount of protection for gravity-fed endeavorsAggressive knee pads designed for hard-charging with a built-to-last feelHighly protective pads that are ready to rumble but performance is limited by a clumsy fitAn aggressive, gravity-focused knee pad that delivers exceptional protection and impressive qualityAn old-school pair of knee/shin guards built for big hucks and big bikes
Rating Categories Troy Lee Designs Sp... Fox Racing Enduro K... Sweet Protection Kn... Leatt Airflex Hybrid Rapha Trail Knee Pads Leatt Airflex Pro Fox Racing Launch D3O POC Joint VPD System G-Form Pro-X2 Alpinestars Paragon... 7iDP Sam Hill IXS Carve Evo+ POC Oseus VPD Knee Troy Lee Designs Ra... Fox Racing Launch P... 100% Surpass Endura MT500 Hard S... 7iDP Project Knee Troy Lee Designs Triad
Protection (30%)
3.0
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Pedal Friendliness (20%) Sort Icon
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Ventilation and Breathability (20%)
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Specs Troy Lee Designs Sp... Fox Racing Enduro K... Sweet Protection Kn... Leatt Airflex Hybrid Rapha Trail Knee Pads Leatt Airflex Pro Fox Racing Launch D3O POC Joint VPD System G-Form Pro-X2 Alpinestars Paragon... 7iDP Sam Hill IXS Carve Evo+ POC Oseus VPD Knee Troy Lee Designs Ra... Fox Racing Launch P... 100% Surpass Endura MT500 Hard S... 7iDP Project Knee Troy Lee Designs Triad
Weight (per pair, size L) 228 grams 198 grams 222 grams 363 grams 372 grams 256 grams 445 grams 346 grams 220 grams 290 grams 320 grams 454 grams 331 grams 465 grams 410 grams 498 grams 571 grams 420 grams 1068 grams
Padding Material 4mm D30 impact foam Not specified SAS Tech AirFlex gel, Sliding hard shell knee cup RHEON Active Polymer AirFlex impact gel D3O polyurethane VPD (visco-elastic polymer dough) RPT Stretch mesh and Ripstop nylon SAS Tech Xmatter protection foam VPD Neoprene Removable Hard Cap with D30 Padding Foam and plastic knee cup Hard shell, D30 insert, and PU foam Sas-Tec kneecap pad with flexible hard cap/polygon foam Hard shell, D30 liner
Body Material Abrasion-resistant material Perforated neoprene N/A Knitted base layer, MoistureCool and AirMesh fabrics 78% Recycled Nylon, 22% Elastane, Super Fabricâ„¢ Front Panel Moisture Cool, Airmesh 20% nylon, 40% neoprene, 5% polyester, 5% spandex High-tenacity nylon Moisture wicking UPF 50+ fabric Mesh Breathable 4-way stretch mesh AeroMesh, 40% Polyester, 25% PU, 15% Nylon, 15% Kevlar, 5% EVA N/A Neoprene, polyurethane 30% neoprene, 25% polyurethane, 18% thermoplastic polyurethane, 14% nylon, 13% polyester Rubberized ventilated outer skin Elastane 5%, Polypropylene 15%, Polyester 20%, PU 25%, Nylon 35% Pro-knit breathable sock Hardshell design with D30 liner
Adjustments? No No No No No No No No No No No Upper and lower LoopLock straps No No Adjustment straps + removable hard cap 2 cinch straps Upper and lower straps Center strap system (top), Velcro from both sides Adjustment Straps
Safety Certifications CE EN 13688:2013 Not specified N/A CE EN 1621-1 Level 3, Type B CE EN 1621-1 CE EN 1621-1 Level 1 CE EN 1621-1 NOCSAE, CE CE CE EN 1621-1:2012 Level 2 CE EN 1621-1 Level 1 CE EN 1621-1, Level 2 CE EN 1621-1 EN1621-1:2012 CE EN Level 2 CE EN 1621-1 CE EN 1621-1 CE1621-1 Level 1
Available Sizes XS/S - XL/XXL S - XL XS, S, M, L, XL S-XXL XS, S, M, L, XL S - XXL S - L S - L XS - XL XS - XL S-XL XS-XXL S, M, L, XL XS/S - XL/XXL S, M, L S - XL S/M, M/L, L/XL S-XL XS/S, M/L. XL/XXL


Best Overall Mountain Bike Knee Pads


Fox Racing Launch D3O


82
OVERALL
SCORE
  • Protection 8.0
  • Fit and Comfort 10.0
  • Pedal Friendliness 8.0
  • Ventilation and Breathability 7.0
  • Durability 8.0
Weight (per pair): 445 grams | Safety Certifications: CE EN 1621-1
REASONS TO BUY
Unrivaled comfort levels
Substantial, confidence-inspiring protection
Excellent fit
REASONS TO AVOID
Heavy
Not the best choice for long rides

Once we began testing, the Fox Racing Launch D3O quickly became a favorite of our test class. These pads are well-designed, offer a dialed fit, and the comfort levels are outstanding. They use pliable D3O padding that is comfortable and soft during regular wear and then firms up upon impact. These pads offer lots of protection and are a great choice for riders who frequently ride aggressive terrain or have a tendency to crash with some regularity. Despite the high level of protection, the Launch 3O still allows for decent pedaling capability. They are clearly not the best option for long, pedal-heavy rides, but still function nicely for an average 1-2.5 hour endeavor. We recommend these pads for trail, all-mountain, and enduro riders seeking serious knee protection without sacrificing comfort.

To be clear, these pads aren't quite perfect. They are certainly on the heavier and bulkier end of the spectrum and can get toasty when the mercury rises. If you plan to ride in hot climates, you might want to consider our other contenders with better airflow and thinner materials. Furthermore, given the relative bulk, they simply can't offer the same pedal-friendliness as some of the lighter-duty options we tested. Nevertheless, the Launch D3O is one of our favorite knee pads for the excellent combination of comfort and protection. If you only require minimal protection, the lightweight and breathable Sweet Protection Knee Guards are more suitable for those hot days.

Read more: Fox Racing Launch D3O review

mountain bike knee pads - we loved these knee pads. if you value real protection and decent...
We loved these knee pads. If you value real protection and decent pedaling abilities, you might love them too.
Credit: Laura Casner

Best for Downhill Riding


Fox Racing Launch Pro D3O


81
OVERALL
SCORE
  • Protection 9.0
  • Fit and Comfort 9.0
  • Pedal Friendliness 7.0
  • Ventilation and Breathability 7.0
  • Durability 8.0
Weight (per pair):410 grams | Safety Certifications:EN1621-1:2012
REASONS TO BUY
Excellent fit
Superb amounts of protection
High level of comfort
Durable
REASONS TO AVOID
Warm
Not very pedal-friendly

The Fox Racing Launch D3O Pro are dialed knee pads that are a fantastic option for bike park laps and downhill riding. These protective pads use a large patch of soft and plush D3O padding that hardens upon impact. In addition, there is a hardshell protective cap on the front of the knee cap that will help these pads survive multiple crashes without tearing. The attribute that we loved the most about the Launch D3O Pro is the outstanding protection levels while retaining a reasonably sleek profile. The fit is incredible, and while these pads are definitely warm, they are ultra-comfortable and could be worn all day when riding the lifts or shuttle truck.

These pads target a certain kind of mountain biker…the gravity fiend. They are well-suited for park laps and shuttle-powered shenanigans. As a result, they are not a good choice for daily trail riding or riders looking for pads with which to do substantial amounts of climbing. They aren't restrictive or irritating when turning the pedals, they are simply too bulky and warm for such riding styles. Riders in hot climates should note these pads can be toasty. That being said, all heavy-duty knee pads will inherently be warm. But when it comes to climbing, we prefer to pedal with the lightweight Sweet Protection Knee Guards on our knees.

Read more: Fox Racing Launch D3O Pro review

mountain bike knee pads - if you like sending it big...the fox launch d3o pro might just be...
If you like sending it big...the Fox Launch D3O Pro might just be the pads for you.
Credit: Quinten Koch

Best Blend of Protection and Pedal-Friendliness


Leatt Airflex Pro


80
OVERALL
SCORE
  • Protection 8.0
  • Fit and Comfort 9.0
  • Pedal Friendliness 8.0
  • Ventilation and Breathability 7.0
  • Durability 8.0
Weight (per pair): 256 grams | Safety Certifications: CE EN 1621-1
REASONS TO BUY
Smart and substantial protection
Great balance of protection and pedal-friendliness
Relatively lightweight
REASONS TO AVOID
The upper sleeve could be longer
A bit warm

The Leatt Airflex Pro offers a brilliant combination of protection and pedal-friendliness, giving you a knee pad that is comfortable in a lot of on-trail situations. They have enough armor to be worn at a bike park or ripping shuttle laps, but they can just as easily embark on a 30-mile trail ride. The protection is strategically placed and has a pliable main armor patch made out of 3D-molded silicone. Auxiliary foam padding is situated on both sides of the knee and in the center above the knee cap. They are also impressively comfortable, stay in place well, and don't chafe or irritate the skin over the course of a long ride. Additionally, they are on the lighter side of the spectrum and reasonably priced.

As previously mentioned, we love the versatility of this model. However, some riders may point out that a set of knee pads that can do everything doesn't stand out as extremely impressive in any one area. These pads can't match the protection of some of the beefiest options, and they also don't pedal quite as well as some of the lighter, thinner models. Furthermore, they don't breathe particularly well, which may be an important consideration for those in hot climates. Aside from that, we feel the Airflex Pro provides a stellar combination of protection, pedal-friendliness, and comfort. However, if protection is your top priority, check out the 7iDP Project Knee. Although heavy, this aggressive option may be precisely what you need.

Read more: Leatt Airflex Pro review

mountain bike knee pads - we were blown away by how comfortable these pads were. we could ride...
We were blown away by how comfortable these pads were. We could ride all day in these without any irritation or discomfort.
Credit: Laura Casner

Best for Comfort


Rapha Trail Knee Pads


78
OVERALL
SCORE
  • Protection 7.0
  • Fit and Comfort 10.0
  • Pedal Friendliness 8.0
  • Ventilation and Breathability 7.0
  • Durability 7.0
Weight (per pair): 372 grams | Safety Certifications: Level 3, type B
REASONS TO BUY
Supremely comfortable
Moderate level of protection for everyday trail riding
Quality materials and construction
REASONS TO AVOID
Long sleeve is not ideal for hot climates
A little expensive

If comfort is a top priority, the Rapha Trail Knee Pads are a tremendous choice. These pads are incredibly comfortable thanks to an excellent fit and quality materials. The RHEON Lab armor patch is fairly large and provides excellent mid-duty protection and it conforms nicely to the kneecap and remains comfortable hours into a ride. The consistent fit is secure and these pads stay in place whether you're grinding up a long climb or charging back downhill. We feel these are a great pedal-friendly option for riders who seek a little more protection than the more minimalist pads provide.

While the Trail Knee Pads do breathe well enough, the overall length of the sleeve is quite long. On warm or hot rides, these pads can feel quite toasty. A set of pads that don't cover so much of your leg will inherently allow for better airflow. They are also on the more expensive end of the spectrum, though we feel that the price is justified by the impressive blend of comfort and quality. Riders shopping for a more budget-friendly buy should check out some of our other award winners like the Leatt Airflex Pro. They're slightly less comfortable, but offer a little more protection and durability.

Read more: Rapha Trail Knee Pads review

mountain bike knee pads - whether turning the cranks or blasting downhill, the rapha pads are...
Whether turning the cranks or blasting downhill, the Rapha pads are supremely comfortable and quite versatile
Credit: Pat Donahue

Another Great Mid-Duty Knee Pad


Leatt Airflex Hybrid


77
OVERALL
SCORE
  • Protection 6.0
  • Fit and Comfort 9.0
  • Pedal Friendliness 9.0
  • Ventilation and Breathability 8.0
  • Durability 7.0
Weight (per pair): 363 grams | Safety Certifications: EN 1621-1
REASONS TO BUY
Just enough protection for most trail and all-mountain riding
Great fit
Pedal friendly
REASONS TO AVOID
Not burly enough for super-aggressive riders on rough trails
Sleeve could be subject to tearing after a few crashes

The Leatt Airflex Hybrid earned high honors for an excellent combination of moderate protection, comfort, and pedal-friendliness. A huge number of riders have no desire to push the limits of speed or to ride gnarly trails. For every enduro bro trying to KOM a rowdy downhill, there are five casual riders who just want to get out on the trails and have a fun rip. That's where the Leatt Airlex Hybrid pads come in. They offer enough protection to feel like they are substantial without being overly bulky and cumbersome. They are low-profile, comfortable, and offer adequate protection for most trail and all-mountain riding. The fit is fantastic, and they are quite pleasant while pedaling. They are more protective than the super minimalist models while being on the slender side of the mid-duty pads.

While we think these are a great option for trail and all-mountain riders, they don't offer the level of protection that we feel is necessary for full-on gravity riding. If you ride lifts with your downhill bike and really like to push the envelope of speed and aggression, these probably are not the pads for you. Another concern we did have about Airflex Hybrid is the longevity of the knit fabric that comprises the sleeve. That said, if you're looking for a sensible set of knee pads for everyday riding, we feel these are a great option. For other riders looking to bomb it on the downhill, the protective Fox Racing Launch D3O Pro is a better pick.

Read more: Leatt Airflex Hybrid review

mountain bike knee pads - the airfex hybrid have a slim, low-profile look and a super...
The Airfex Hybrid have a slim, low-profile look and a super comfortable fit.

Compare Products

select up to 5 products to compare
Score Product Price
82
Fox Racing Launch D3O
Best Overall Mountain Bike Knee Pads
$95
Editors' Choice Award
81
Fox Racing Launch Pro D3O
Best for Downhill Riding
$150
Top Pick Award
80
Leatt Airflex Pro
Best Blend of Protection and Pedal-Friendliness
$100
Top Pick Award
78
Rapha Trail Knee Pads
Best for Comfort
$122
Top Pick Award
78
Sweet Protection Knee Guards
$90
78
7iDP Sam Hill
$95
78
IXS Carve Evo+
$119
78
Troy Lee Designs Raid Knee Guard
$139
77
Leatt Airflex Hybrid
Another Great Mid-Duty Knee Pad
$120
Top Pick Award
76
100% Surpass
$139
76
POC Joint VPD System
$160
75
7iDP Project Knee
$130
Top Pick Award
73
Endura MT500 Hard Shell Knee Pads
$125
72
Fox Racing Enduro Knee Sleeve
$85
71
POC Oseus VPD Knee
$150
70
Alpinestars Paragon Plus Knee Protector
$63
70
G-Form Pro-X2
$75
70
Troy Lee Designs Triad
$115
67
Troy Lee Designs Speed Knee Sleeve
$59

mountain bike knee pads - our lead knee pad tester pat loves rough and rocky terrain.
Our lead knee pad tester Pat loves rough and rocky terrain.
Credit: Jenna Ammerman

How We Test Mountain Bike Knee Pads


Our testers are addicted to mountain biking and finding the best gear for the job is one of our top priorities. As a result, we are constantly on the lookout for the best new mountain bike knee pads. Our test class includes a wide range of models and manufacturers. Our selection includes big, burly knee pads designed to send it and go fast, as well as super light, minimalist models that prioritize pedal friendliness. We rated our tested pads on five metrics: protection, fit and comfort, pedal-friendliness, ventilation and breathability, and durability. We put them through the test riding on various types of terrain, from the technical to the casual, on both long and short rides alike. We took note of their comfort, the degree of protection offered, the amount of ventilation, and overall construction. The combined scores from our ratings help us determine our award winners and top recommendations.

Our rating metrics for mountain bike knee pads are weighted as follows:
  • Protection (30% of overall score weighting)
  • Fit and Comfort (20% weighting)
  • Pedal Friendliness (20% weighting)
  • Ventilation and Breathability (20% weighting)
  • Durability (10% weighting)

Why Trust GearLab


Our lead mountain bike knee pad tester is Pat Donahue. This Central Washington resident is an industry veteran and is closing in on two decades of mountain biking experience in a variety of disciplines. Pat was formerly the Senior Mountain Bike Review Editor for OutdoorGearLab. He has a particularly strong appetite for rough and steep trails making him the perfect candidate to test knee pads. Also, he has plenty of experience crashing on those rough and steep trails, which only makes him a great fit for the job. Pat was assisted by another former Senior Mountain Bike Review Editor Jeremy Benson. Benson has been riding mountain bikes for nearly three decades and has taken his fair share of crashes in that time. He has an extensive collection of scars, and these days he chooses to protect his knees with quality knee pads. As a lover of long rides, Benson prioritizes pedal-friendliness, breathability, and comfort in the pads he chooses.

We weight each set of knee pads for consistency.
We weight each set of knee pads for consistency.
Fortunately, most of our testing involves riding in each set of...
Fortunately, most of our testing involves riding in each set of pads. This gives us the opportunity to scrutinize fit, comfort, breathability, and pedal-friendliness.
We try to match our test riding to the intended application of each...
We try to match our test riding to the intended application of each set of pads.

Analysis and Test Results


Our testers spent years riding with these knee pads over all sorts of terrain. We carefully analyzed each pad as it relates to our scoring metrics to help you find the best option for your riding style and budget. Read on to learn which models performed best in each of our targeted metrics.


What's the Best Value?


We don't judge products based on their price, but we are always in search of the best value. Sometimes a high price correlates to higher quality and performance. A prime example is the POC Joint VPD System pads. They are the most expensive pads in our test but also deliver very high comfort levels. The Fox Racing Launch D3O lands in the middle of the pack in terms of price and offers excellent performance — making them a particularly strong value. The Leatt Airflex Pro is the most well-rounded model in our review and they are competitively priced. Finally, the Sweet Protection Knee Guards blend an appealing price tag with a high level of comfort and enough protection for the minimalist.

Protection


Mountain bikers wear knee pads to protect themselves in the inevitable event of a crash. New riders and those pushing their limits in aggressive terrain are typically more likely to crash and may benefit from more protective mountain bike knee pads. Experienced trail riders and those who don't crash often may prefer something more minimal like a mid or light-duty model. Obviously, protection is a critical metric when evaluating knee pads. Protection levels are worth 30% of our overall scores.

We did not attempt to intentionally crash to test the protective properties of our test knee pads. Instead, we spent a ludicrous amount of time wearing each pair and painstakingly evaluating the quality, thickness, and placement of the armor. Some pads use armor that is loaded with technical features and design; others take a more straightforward approach.


The 7iDP Project Knee is a top performer in this metric. If you are seeking a knee pad that prioritizes protection above all else, these pads are for you. They feature a long sleeve built from a tightly knit and durable fabric. There is a main armor patch on top of the knee cap that is thick and substantial while also being quite flexible. On the exterior of the knee pad, there is a harder plastic patch that adds a layer of protection and allows the pad to slide over surfaces in the event of a crash. The Project Knee also offers some secondary protection that runs around the perimeter of the main armor patch, a great feature for all of those times when you don't crash directly on the front of your knee. Given all of this protection and burly construction, these pads don't breathe very well and aren't nearly as pedal-friendly as lighter-weight and less protective options, but they sure will help preserve your precious knees.

mountain bike knee pads - the project knee earned top honors for protection in our selection...
The Project Knee earned top honors for protection in our selection of knee pads.
Credit: Jenna Ammerman

The 100% Surpass is another highly protective knee pad. They have a hard-plastic armor plate that is a decent size with auxiliary padding placed around this area and around the inside and outside of the knee. In addition, there is foam padding above the kneecap to protect against your knees being smashed into the handlebars. The majority of the armor is coated with either plastic or rubber to help the pads survive crashes without major rips or tears. The Troy Lee Designs Triad also delivers absolutely top-notch protection levels, but they sacrifice any semblance of pedal-friendliness in the process.

mountain bike knee pads - most of the armor is covered with a plastic or rubberized material...
Most of the armor is covered with a plastic or rubberized material. This protects the fabric from tears and rips.

Despite giving up a small amount of protection to the 100% Surpass and 7IDP Project Knee, the Fox Racing Launch Pro D3O is a great choice for downhill riding. Fox was able to deliver very good protection with an outstanding fit and tremendous comfort levels in a relatively slender package. They used dialed D3O padding that hardens upon impact with a removable hardshell protective cap on the knee cap that should help these pads withstand the test of time. The blend of great protection with an even better fit makes these pads the set we will reach for every single time we head to the bike park.

mountain bike knee pads - the fox launch d3o pros are ideal for downhill riding...and...
The Fox Launch D3O Pros are ideal for downhill riding...and freeriding.
Credit: Quinten Koch

The second tier of protection is occupied by a couple of high-end knee pads. The Troy Lee Designs Raid Knee Guard offers very impressive levels of protection in a bit of a sleeker package. The padding is soft and extremely comfortable but hardens upon impact. Auxiliary padding runs down the inside and outside of the main armor patch to protect these vulnerable areas. The Raid pads have a bit less padded surface area compared to the most protective options in this review but are still plenty beefy for bike park days or burly shuttle laps. The Fox Racing Launch D3O are very similar but offer just a touch less protective padding in the knee cap. The IXS Carve Evo+ and Endura MT500 Hard Shell Knee Pads both deserve an honorable mention here. They both offer similar levels of protection as the Fox Racing Launch D3O and Troy Lee Designs Raid.

mountain bike knee pads - riders who want supreme comfort and serious protection will love the...
Riders who want supreme comfort and serious protection will love the Fox Racing Launch D3O Knee Pads.
Credit: Laura Casner

The Leatt Airflex Pro also posts an excellent score in terms of protection. For how versatile they are, the protection levels are quite impressive. That is a very high compliment. The POC Oseus VPD Knee is worth noting as a great aggressive trail riding knee pad. They feel a bit more bulky and restrictive compared to the Leatt Airflex Pro, but the protection levels are very solid.

If the idea of sleek and pedal-friendly knee pads is appealing to you, the Leatt Airflex Hybrid delivers more protection than the ultra-light options. The Airflex Hybrid delivers a bit of enhanced protection while remaining sleek, low-profile, and reasonably light. Light and minimal pads like the Sweet Protection Knee Guards or the Fox Racing Enduro Knee Sleeve simply can't stand up in this category. These pads are designed to maximize pedal-friendliness and comfort with just a little protection for minor crashes.

mountain bike knee pads - the pads we tested vary in terms of fit and comfort. pads like the...
The pads we tested vary in terms of fit and comfort. Pads like the 7iDP Project Knee are super protective and surprisingly comfortable.
Credit: Jenna Ammerman

Fit and Comfort


Every mountain biker wants a comfortable knee pad that fits well. A well-designed fit and a high comfort level are both critical when searching for the perfect pad. Some pads may have nice protective features, but if they can't deliver a quality fit and pleasant feel, you won't want to wear them. Determining our scores for this metric was quite simple. We just wore these pads often and for long periods. We rode as much as we could in each set, but we also wore them while writing and editing this review, while cooking dinner, and while walking the dog. All of this to root out any quirks that may rear their ugly heads.


We had a few standout performers in terms of fit and comfort. The Fox Racing Launch D3O pads deliver a dialed, plush, and precise fit. The knee sleeve is perfectly articulated and feels very natural. The D3O padding is exceptionally plush and is strikingly pleasant against the knee throughout the pedal stroke, considering how protective they are. The fit is precise and consistent, and there is no excess material or unnatural pressure points. We feel they are nearly perfect. Not surprisingly, the Fox Racing Launch D3O Pro pads deliver nearly identical comfort levels. The Launch D3O and the Launch D3O Pro are essentially the same pads with the addition of a hardshell knee cap plate on the Pro version.

mountain bike knee pads - the rapha pads are supremely comfortable and suitable for a lot of...
The Rapha pads are supremely comfortable and suitable for a lot of situations.
Credit: Pat Donahue

The Rapha Trail Knee Pads are one of the most comfortable models we've ever tested as a result of their consistent and perfectly dialed fit. The quality of the materials is apparent, and they are comfortable against the leg even when soaked in sweat. The RHEON Lab armor patch is pliable and comfortable against the kneecap. Whether you are climbing or descending, these pads don't shift around in the least and remain comfortable.

The POC Joint VPD System is another top performer in this metric. These pads make their money off of a plush fit. If you want your knee pads to feel pillowy and soft at all times, these are a great option. The all-fabric construction avoids any plastic or rubber that could irritate the skin. The comfort level and dialed fit are met with a slightly shorter overall sleeve length.

The Leatt Airflex Hybrid has a fit that we would describe as extremely precise. Yes, the materials are exceptionally comfortable against the leg, but the precision of the fit is excellent. Despite the length of the sleeve, the design is well-executed, and there are no pinch points or deviations in snugness.

mountain bike knee pads - the fit is nearly perfect and the d3o armor is incredibly pleasant...
The fit is nearly perfect and the D3O armor is incredibly pleasant against the knee.
Credit: Laura Casner

The Fox Racing Enduro Knee Sleeve is another exceptionally comfortable pad. Just keep in mind that these minimalist pads offer very, very little protection. As a result, there is no clumsy armor interfering with comfort levels, but you put yourself at more risk. The soft and simple armor patch feels great against the knee, while the simple sleeve conforms well to the leg and doesn't move around when pedaling. The Enduro is the second lightest set of pads in our test, coming in at 99 grams per leg and 198 grams for the pair.

mountain bike knee pads - the enduro knee sleeve is an excellent length and offers adequate...
The Enduro Knee Sleeve is an excellent length and offers adequate protection for milder rides.
Credit: Jenna Ammerman

The Leatt Airflex Pro delivers a quality fit and solid comfort levels despite having more protective bulk compared to a model like the Enduro Knee Sleeve. These pads are clearly well-designed and well-executed. The pads stay in place, and they are pleasant on small-to-mid-sized rides. The 7iDP Project Knee is another option with a well-sorted fit. Given the obvious heft of these beefy, award-winning pads, they are toasty. That said, they are impressively comfortable, considering the level of protection they offer.

mountain bike knee pads - depending on your riding style, pedal-friendliness may or may not be...
Depending on your riding style, pedal-friendliness may or may not be a huge priority. Lighter protection generally equals a higher degree of pedal friendliness.
Credit: Laura Casner

Pedal Friendliness


Pedal-friendliness is another critical metric. A knee pad can have all of the protection in the world, but if they are not pedal-friendly, they may be relatively useless for some riders. Of course, this metric is all relative, and making an educated purchase decision hinges on the most sensible combination of protection and pedal-friendliness that suits your riding style.

To determine the scores for pedal-friendliness, we simply pedaled — a lot. We wore each of these pads on multiple long climbs, short sprints, and casual meanders. While it is immediately apparent which knee pads are the most pedal-friendly, it is essential to put in the time on longer rides to see if any subtleties emerge or if they begin to irritate you a couple of hours in.


It shouldn't come as a huge surprise that some of the very simple, sleek, and lightweight knee pads scored very well in this metric. The Sweet Protection Knee Guards were our favorite for rides with loads of climbing. The Fox Racing Enduro Knee Sleeve and the Troy Lee Designs Speed Knee Sleeve also posted high scores in terms of pedal-friendliness. All three of these minimalist options are about as close as you can get to feeling like you are not wearing knee pads at all. The pedal motion while wearing these pads is significantly better than any other pads in our test.

The Sweet Protection pads stood out as just a bit more impressive compared to the Fox and Troy Lee Designs because the SAS TEC armor plate felt a bit more dialed. The armor is more ergonomic and conformed to the kneecap a bit more consistently. Even at the top of the pedal stroke, the armor found in the Sweet Protection was the most pliable.

mountain bike knee pads - the troy lee designs speed knee sleeve is a minimalistic and simple...
The Troy Lee Designs Speed Knee Sleeve is a minimalistic and simple option.
Credit: Jenna Ammerman

While the aforementioned minimalist options offer high levels of pedal-friendliness, they aren't very protective. The Leatt Airflex Hybrid also provides a high level of pedal-friendliness while delivering a bit more protection. These knee pads strike a nice balance of real protection while still prioritizing an unrestricted pedal stroke. If you like the sound of the ultra-minimalist knee pads but think you need a bit more protection, these pads are an excellent choice.

The Rapha Trail Knee Pads and POC Joint VPD System Knee are both reasonably pedal-friendly pads with mid-duty protection. These pads are plenty protective for the majority of riders without feeling excessively bulky.

mountain bike knee pads - sometimes you need to pedal up to those burly descents.
Sometimes you need to pedal up to those burly descents.
Credit: Jenna Ammerman

The Leatt Airflex Pro pads deliver the absolute best blend of pedal-friendliness and protection. They can't match the breezy pedaling feel of the flimsy, lightweight pads, but they deliver far more protection. That said, they probably wouldn't be our first choice for an all-day backcountry epic, though they could certainly pull it off.

mountain bike knee pads - the fox racing launch d3o knee pads deliver excellent levels of...
The Fox Racing Launch D3O Knee Pads deliver excellent levels of protection while retaining decent pedaling abilities suitable for shorter rides.
Credit: Laura Casner

Ventilation and Breathability


Riding in the summer can be a toasty endeavor, with Southwest or Southern California riders seeing temperatures well into the triple digits. Riders on the East Coast will see warm temperatures with suffocating humidity. Nobody wants to wear hot and clammy knee pads while suffering through a mid-summer ride.


It shouldn't come as a surprise that the lightest and simplest pads also deliver the best ventilation. This is quite logical: less material = cooler knee pads. The Sweet Protection Knee Guards, Troy Lee Designs Speed Knee Sleeve, Fox Racing Enduro Knee Sleeve, and Alpinestars Paragon Plus deliver the best ventilation and airflow. The absence of any hard or semi-hard plastic works in their favor in this regard. When you are charging down a trail at speed, you can feel a bit of air penetrate the armor and pass through to the knee as it only needs to pass through a thin, soft piece of foam. These pads still aren't exactly cool, but they do offer the best airflow.

mountain bike knee pads - soft, foamy, minimalist knee pads allow a lot of air to pass through.
Soft, foamy, minimalist knee pads allow a lot of air to pass through.
Credit: Jenna Ammerman

The Leatt Airflex Hybrid are next in line. These pads certainly have a long sleeve and more robust armor compared to the ultra-light minimalist options. That said, they are still relatively slender pads and promote solid airflow. The 7iDP Sam Hill are even more protective while still retaining above-average ventilation. The Sam Hill Pads use a very thin sleeve material that allows air to pass through and moisture to escape. The sleeve is very long, but the material is exceptionally cool and comfortable. The Rapha Trail Knee Pads also feature a long sleeve design. While this long sleeve is detrimental to airflow, the high-quality four-way stretch material is extremely pleasant on the leg, even when soaked in sweat.

mountain bike knee pads - moisture cool fabric and cutouts at the back of the knee help...
Moisture Cool fabric and cutouts at the back of the knee help ventilate the Leatt Airflex Pro.
Credit: Laura Casner

The Leatt Airflex Pro and Fox Racing Launch D3O also fare decently here. While both are warmer and less ventilated than a featherweight, minimalist option, they deliver a good balance of protection, ventilation, pedal-friendliness, durability, and fit/comfort. The Airflex has a MoistureCool panel of light mesh in the rear of the pad that allows heat to escape, and both have cutouts on the back of the knee.

Durability


While mountain bike knee pads are a significantly smaller purchase compared to a bicycle or a wheelset, they still require you to drop some of your hard-earned cash. Nobody wants to spend money on a pair of knee pads that will be torn to shreds after one crash or start to have threads unravel within a month or two of ownership. Durability is only worth 10% of our final score, yet we feel it is an important metric worth considering.

We didn't crash in every single pair of knee pads, so we can't objectively and accurately discuss how each set of pads reacts in the event of a crash. We can, however, carefully evaluate the construction and layout of each model based on decades of riding and crashing experience and comment on our perception of how they will survive the rigors of mountain biking.


The 100% Surpass is a clear standout in this metric. If you think you may be hitting the deck here and there, these pads will likely have the longest lifespan since the majority of the padding is armored with plastic or rubber material. This helps them resist ripping to shreds if you crash and slide across the earth. Pads with all-fabric construction will get shredded far more easily.

mountain bike knee pads - these pads offer plenty of protection for gravity-fed endeavors.
These pads offer plenty of protection for gravity-fed endeavors.

The Fox Racing Launch D3O Pro has a hardshell armor plate on the knee cap. This is an area likely to see an impact or ten over the lifetime of the knee pads. The hardshell armor plate will help survive these crashes without tearing or ripping.

Construction quality is a crucial consideration with regard to durability. The 7iDP Project Knee pads are built to last. They use a burly, knit construction with a heavy-duty material that will resist cutting and tearing far better than most any other pad in our test. Again, the hard, plastic armor plate on the knee cap allows these pads to survive crashes more effectively than pads with fabric-covered knee pads.

The Endura MT500 Hard Shell Knee Pads are ready to rumble. The thick and meaty construction is met with a hard plastic shell at the kneecap.

The IXS Carve Evo+ are rugged. They don't have a hard plastic outer armor plate, but the materials are thick, burly, and mean. From the minute we strapped these bad boys on, they were ready for the gnar. The combination of generous amounts of armor with thick and reinforced regions made these pads stand out.

mountain bike knee pads - a quality pair of knee pads will withstand being taken on and off...
A quality pair of knee pads will withstand being taken on and off thousands of times.
Credit: Jenna Ammerman

The Leatt Airflex Pro also features a quality design. The rubberized knee armor should withstand some abuse, while the stitching and seams are relatively well-hidden and burly-looking. The Surpass and Project Knee are by far the best choices for a pad that will survive hard charging for seasons on end, but the Airflex Pro is right up there, too.

mountain bike knee pads - if you ride rough and rugged terrain or you're simply prone to...
If you ride rough and rugged terrain or you're simply prone to crashing, the beefier, more protective pads feel the most durable.
Credit: Laura Casner

The Fox Racing Launch D3O and Troy Lee Designs Raid Knee Guard are excellent and protective knee pads as well. That said, they both have a fabric exterior that could be more prone to ripping in the event of a crash compared to hard-shell designs. If you might be crashing frequently, it could be worth considering a knee pad with a harder exterior.

mountain bike knee pads - there are loads of great knee pads on the market to suit varying...
There are loads of great knee pads on the market to suit varying riding styles, needs, and budgets.
Credit: Jenna Ammerman

Conclusion


Navigating the heaps of jargon and technical terms surrounding mountain bike knee pads can be overwhelming. There are a mind-bending amount of options on the market. Between similar marketing copy and similar aesthetics, different pads can start to blend together quickly. It is important to note that there truly are enormous differences between all of the knee pads in our review. The best advice we can offer is to be very honest about your needs and find a pair that best suits your terrain, riding style, and penchant for crashing.

Pat Donahue & Jeremy Benson