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Item # GFM000B

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Item # GFM000B

Crash like a champ.

If you're riding hard, crashing is an inevitability, which makes the G-Form Pro-X Knee Pads a necessity. Sure, they're lightweight, breathable, and machine washable, but maybe even better is the articulated RPT Impact Protection, which lets you pedal hard and keeps your 'caps from getting busted when you slide out or go over the bars.

  • Machine-washable
  • RPT Impact Protection

Tech Specs

Protection Area:
Recommended Use:
mountain biking

Size chart


Adult Protective Gear
Elbow Circumference 5.5 - 7in
(14 - 18cm)
7 - 8.5in
(18 - 22cm)
8.5 - 9.5in
(22 - 24cm)
9.5 - 10.5in
(24 - 27cm)
10.5 - 11.5in
(27 - 29cm)
11.5 - 12.5in
(29 - 32cm)
12.5 - 15.5in
(32 - 39cm)
15.5 - 18.5in
(39 - 47cm)
Knee Circumference 9.5 - 11in
(24 - 28cm)
11 - 12.5in
(28 - 29cm)
12.5 - 13.5in
(32 - 35cm)
13.5 - 14.5in
(35 - 37cm)
14.5 - 15.5in
(37 - 40cm)
15.5 - 16.5in
(40 - 42cm)
16.5 - 18in
(42 - 46cm)
18 - 20in
(46 - 51cm)
Calf Circumference 9 - 10.5in
(23 - 27cm)
10.5 - 12in
(27 - 31cm)
12 - 13.5in
(31 - 35cm)
13.5 - 14.5in
(35 - 37cm)
14.5 - 15.5in
(37 - 40cm)
15.5 - 16.5in
(40 - 42cm)
16.5 - 18in
(42 - 46cm)
18 - 20in
(46 - 51cm)
How to Measure:
For best results, take measurements over your underwear.
Measure around your eblow where the arm bends.
Measure around your knee where it bends.
Measure around the fullest part of your calf.

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Great low profile protector

    I bought these as gifts for my ripper little brothers. When I strap on knee pads, I usually go for something more burly, but my little bros crash so often on normal rides, they needed them. they were stoked and ride them all the time.

    All you need

    • Familiarity: I've put it through the wringer

    If you're riding steep, long ascents to get to the goods on the downhill, there's no other way to go. It's wearing breathable underarmour with protection from really harsh crashes.

    It's like a subconscious thing with them on. It feels like you don't have anything on, but feel invincible ripping down any type of terrain.

    Not a bad pad

    • Familiarity: I've used it several times

    To be frank, I am hesitant to wear any protection while biking (except for a helmet, duh). However, I picked these up for a trip to Moab because I always seem to leave a lot of skin on the rocks of Porcupine Rim, Amasa Back, and Portal.

    As a generally non-pad wearer, I definitely noticed these and did feel a little restricted at first, but compared to most other light-weight pads, these are hands down my favorites.

    I eventually settled on pulling the pads down over my calves if I had an extended climb, and pulling them up on the descents. This compromise worked for me. As far as protection, I am happy to report that Moab didn't claim any skin from my knees this time!

    Works as Intended

    • Fit: True to size

    This Pads are fantastic! I've taken a couple of solid tumbles in them in the month that I've had them, and they diminished to impact to mere bruising, instead of loss of skin. They pedal quite well, and don't tend to slide down or get too hot. I certainly don't care about the funky look, because I'm having too much fun with them on!

    Comfortable, Lightweight Protection

    • Familiarity: I've used it several times

    So I got these pads about a month ago and I can definitely say that I am impressed. They are extremely comfortable and you really don't even notice they are there. While pedaling, the pads do not restrict movement in the slightest, and the material is very breathable. You probably shouldn't be using these if you are doing some hardcore downhill riding, but for cross country and all mountain rides, these pads are the bees knees. I am 5'8" 145 lbs and I found the mediums to fit very well.

    Nick, I am roughly the same size as you height and weight wise, but I have smaller leg muscles. You said the mediums fit well, what are your leg measurements?

    Hey Ronnie, sorry for the late reply! I have pretty small legs as well so I imagine the mediums would probably fit you well. My typical pant measurements are 30x30. I hope this helps and I highly suggest these pads if you are still in the market for some.

    Killer protection

      They hardly feel like they are there. They are incredibly comfortable and the protective foam does its job well. I highly recommend these to anyone who wants full mobility with protection.

      Wear knee pads without wearing knee pads

      • Familiarity: I've used it once or twice and have initial impressions

      I forget they're even there. These are very lightweight, breathable, and almost unnoticeable. Zero slippage. Very happy with my first and probably last set of pads. Obviously not recommended for world cup DH racing. I have the legs of a bicycle riding chicken. Medium fits great.

      Avg. ride time: 1h 37m per week
      • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

      when the weather cools I wear always

      • Familiarity: I've put it through the wringer

      Why not, they're comfortable enough to ride in and provide extra protection.

      Super Ridable Knee Pad

      • Familiarity: I've put it through the wringer

      This is my second set of these, I went from L to XL after I destroyed my first set and it was the right move. I can now wear the pad on the climbs with no irritation. These things have saved me on a number of occasions, mostly on clumsy falls where I slam into the bike.

      I went with XL; I am 6'2" 190 lbs.


      • Familiarity: I've put it through the wringer

      Great for all mountain riding--you don't even know they are there while pedaling, but give you a little extra confidence through tough sections. The impact compound on these is a little stiffer than it was a year or two ago. I did not notice any discomfort because of this, but it probably protects a bit better.

      Nice and pliable, but will take a hit

      • Familiarity: I've put it through the wringer

      These pads are awesome for rough trail riding. Easy to pedal in if you so choose and they breathe remarkably well for a set of knee pads. Having taken a couple falls on them I've been pleased with their function in easing the damage and their durability. Highly recommend for those riding trail bikes. Not a great downhill pad, but that's not what they were made for.

      G-form Knee Pads

      • Familiarity: I've used it once or twice and have initial impressions

      Finally decided to get a pair of knee pads after riding for 7 years with only a helmet. I wanted something light weight and very movable while I ride. From reading reviews on how light and breathable these are, I decided to try them out. I am very happy with these pads and hope that they will protect me in the future.

      Just enough!

      • Familiarity: I've used it several times

      Great pads. They are not overly bulky like many other pads and yet provide just the right amount of protection for minor impacts of trail riding. If you are anything like me (I have large calf/ thighs) I would recommend going a size larger. They seem to disappear on your legs and don't slide around. Possibly the best enduro style pad in my opinion.

      Thanks for taking the time to toss up a review on the G-Form's, Graham! Stoked to hear that these bad boys are working out well for you.

      If I'm right in between sizes according to the size charts, both here and at the G-form website, should I go larger or smaller?

      Hey David,

      I would recommend you size down and go with the smaller choice if you are between sizes in G-Form Pads. Feel free to shoot me any additional questions directly.


      Expert Gearhead



      top notch protection / performance

      • Familiarity: I've put it through the wringer

      I wear these paddleboarding and pedaling. While these may not save limbs if you are ragdolling thru a boulder garden, as one reviewer noted, they have certainly spared me more than a couple trips to the ER. Your average wipeout - the one that scrapes wrist to elbow and scars knees - is only embarrassing thanks to these pads. The sticky rubber at the top and bottom keeps them in places and they are barely noticeable when pedaling. When the weather turns nippy, they are warm too.
      I'm on my third pair of G Forms and I highly recommend them to everyone who asks. The only complaint is the stitching where the pad meets the Lycra is weak and my previous two pairs of knee pads have failed at the point. But they still work even with the rip.
      I still use plastic knee pads when I ski, but for biking, these are so much better than the hard-plastic.

      Low profile and the tech actually works

      • Familiarity: I've used it several times
      • Fit: True to size
      • Size Bought: Large

      Their body armor is second to none. Very low-profile but more importantly it still impacts you. In fact, the harder you fall the more it resists impact, opposite if traditional foam. I watched a demo at Interbike where they dropped a bowling ball onto a pack of M&M’s, once with a typical foam kneepad on top of the candy and once with their kneepad. With the foam pad all of the M&M's were obliterated. With the G-From, not a single M&M was crushed. Unreal.

      Added protection

        It should be obvious that these aren't your full blown DH knee pads. These are an added layer of protection when you just don't know what the trail could throw at you. They've saved me some skin on a few occasions already and wish I had them in years past to do the same. When the full face helmet goes on, then the POC DH pads go on too.

        Like nothing is there

        • Familiarity: I've put it through the wringer

        I am not one to ride with knee pads, but i recently went on a trip to whistler and decided its better to be safe than sorry. These are by far the best knee pads I have ever worn. They are light weight and they DON'T slip down, EVER!! They offer decent protection and a peace of mind. They didn't bother me while pedaling and I even forgot they were on a few times.

        Not that much protection, light though.

        • Familiarity: I returned this product before using it

        I wanted to like these, since they were lighter than the other options. However, they just didn't seem to provide the protection I wanted.
        First, they don't seem to stay centered on my knee well. That is probably because they are not curved or cupped to fit over your knee. Second, there are small unprotected areas in between the padding. When they are curving around your knee/leg, there seems to be a lot of unprotected areas where something like a rocky edge could hurt you.
        I tried the pads out in my house my wearing them and whacking my knee with various items from my hand to a metal water bottle. While they were better than nothing, they were far behind the two other pads I was demoing (POC Joint VPD Air Knee Pads and Troy Lee Designs KG 5400 Knee Guard). I am keeping one of the other options.