Alpinestars Vapor Knee Guards
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  • Alpinestars Vapor Knee Guards - Black
  • Alpinestars Vapor Knee Guards - Black

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Alpinestars Vapor Knee Guards

The CE certified Alpinestars Vapor Knee Guards are designed to follow the natural curve of your knee, providing articulated protection for dynamic comfort while riding. Light weight and ultra breathable, the Vapor Knee Guards are the perfect addition to your off-road riding kit. 

Features:

  • CE certified protection systems utilizing robust protective structures and impact absorption padding
  • Thermo-formed polymer material construction offers improved impact performance
  • Highly ergonomic design improves streamlining while providing crucial protection for MX and off-road riding
  • Asymmetrical and lightweight ergonomic panel construction offers extended protection surfaces to reduce rotation
  • Intelligent fastening systems offer greater flexibility, customization and prevent side rotation
  • Dual strap closure system on Knee Protectors are specially designed to offer more comfort and adjustment
  • Top strap mounted above the knee and lower strap positioned for ergonomic fit
  • Advanced 3D poly padding for increased comfort and a close-fitting performance
  • Vented panels and advanced microfibers give comfort to the rider, preventing heat build-up while maintaining tactile contact with skin
  • Creative silicone printed graphic pattern

Sizing:

  • SM/MD: 8-10MM knee width
  • LG/XL: 10-12MM knee width
4.3 / 5
Bang For The Buck
4.4 / 5
Protection & Durability
4.5 / 5
Features
3.6 / 5
Comfort
3.8 / 5
Style
4.2 / 5
Air Flow
3.9 / 5
Fit
Small
 
Large

Alpinestars Knee Brace Sizing

Size Knee (cm)
SM 8-9
MD 9-10
LG 10-11
XL 11-12.5

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.

How To Measure

K Knee Using a caliper, measure the width of the knee joint across the kneecap. The leg should be completely straight and in a weight-bearing position.
Product Style RevZilla Item # Manufacturer Product # Availability
Black / SM-MD 844091 6502313-1001SM In Stock: Ships next business day
Black / LG-XL 844092 6502313-1001LXL In Stock: Ships next business day

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Returns

If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

See our full Return Policy for all of the pertinent details.

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4.3 / 5.0
26 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
13
8
4
1
0
Bang For The Buck
4.4 / 5
Protection & Durability
4.5 / 5
Features
3.7 / 5
Comfort
3.8 / 5
Style
4.2 / 5
Air Flow
3.8 / 5
Fit
Small
True
Large
Bang For The Buck
5 / 5
Protection & Durability
4 / 5
Features
3 / 5
Comfort
4 / 5
Style
5 / 5
Air Flow
3 / 5
Better than ICON Stryker or Fox Titan Pro
I tried on the Icon Stryker, Fox Titan Pro, and Fox Titan Race knee guards and the Alpinestars Vapor came out on top. One strap above the knee and one below hold them in place very well. A strech panel above the knee ensures that they are flexible but are also able to move into the right position when changing between standing and sitting on the bike.

These knee guards are great around town over my Drayko jeans (they also fit under) but I would use them on longer rides, too, had I not built-in knee pads in my motorcycle pants.

The Icon Stryker and Fox Titan Pro knee guards were way too bulky. The Titan Pro also are not CE approved unlike the Icon or Alpinestars. Being the most expensive one of the four by far, the Icon Stryker lack a strap above the knee which makes me wonder how well they would stay in place in a crash or when riding long distances.

It didn't take long before I knew the Alpinestars Vapor are the winner for my type of riding and they're also the least bulky. If I wear them over jeans, I can just throw them in a small backpack when walking around town. But they are also comfortable enough to leave on when walking if you don't mind the looks.
March 2, 2013
Ride:
2005 BMW F650GS ABS
Bang For The Buck
2 / 5
Protection & Durability
5 / 5
Features
3 / 5
Comfort
3 / 5
Style
3 / 5
Air Flow
4 / 5
good protection but poor fit
I got these to go under my REV'IT! Airwave Pants. In theory this was a great decision because the knee armor on overpants moves around too much. And as protection for the knee/shin I think these will do a great job.

My problem with them comes in the straps. I tried wearing them with shorts, but the velcro against the leg was too scratchy. And after only about 5 times of using these, the hook on the shin strap moves around causing the strap to loosen and for the pad to slide down my leg. If I get off the bike and walk 20ft (into the store and back) the knee pad will practically be around my ankle.
July 30, 2013
Ride:
2005 Kawasaki Z750S
Bang For The Buck
4 / 5
Protection & Durability
3 / 5
Features
3 / 5
Comfort
3 / 5
Style
4 / 5
Air Flow
3 / 5
Light, reasonably comfortable.
These entry-level guards were a good bang for my buck, however I noticed the following things over the last four months of riding:

1) The square plastic loop through which the calf-strap is fed nearly always rotates lengthwise while the knee guard is worn - which narrows and bunches the strap at that contact point. *See pic.

2) The knee-cup liner material is soft to the touch, however after more than an hour riding I feel a friction burn on my knee. I will remedy this by further lining it with fleece.

I suspect that at 5'9" & 185 lbs, had I opted for size M/L instead of L/XL I may not be experiencing one issue or the other.
August 21, 2013
Bang For The Buck
4 / 5
Protection & Durability
5 / 5
Features
5 / 5
Comfort
4 / 5
Style
5 / 5
Air Flow
4 / 5
Great protection that fit under your Jeans
I bought these to wear under pants when I ride to work. They fit great. I bought the "med/small" size long and they fit with my harness boots just fine(I wouldnt consider the med/large unless you have huge knees!). The knee cup is a bit larger than I would have thought and I wear them over some of my slimmer cut pants, but they fit under my jeans and most of my dress pants. The Velcro is a bit warm on the back of my legs, but I still think they are comfortable. They Velcro band above the knee is really nice and they fit very secure while being very comfortable. I definitely feel safer when I wear them!
June 17, 2013
Bang For The Buck
5 / 5
Protection & Durability
4 / 5
Features
3 / 5
Comfort
3 / 5
Style
3 / 5
Air Flow
4 / 5
Ce Rated (for whatever its worth) and good price
I seriously hurt my knees falling off my Specialized bicycle a few years ago and figured its probably a good idea having knee protection riding a motorcycle (traveling faster than a bicycle and all).

Pros
The plastic knee protector feels solid and I like the additional shin protection. Also liked the price I paid for them.

Cons (remember these are priced pretty low compard to the competition)
Doesn't articulate
moves around on rides
could use more padding

with that said, I will be upgrading from these in the future - possibly the icon stryker or dainese. I'd like an articulating knee guard for more mobility. Also would like a little more padding.

Quick Tip - I wear these over some long jons then jeans ontop. helps keep them stable.
March 20, 2016
Ride:
2014 Honda CRF250L
Bang For The Buck
5 / 5
Protection & Durability
4 / 5
Features
3 / 5
Comfort
3 / 5
Style
3 / 5
Air Flow
4 / 5
Inexpensive, effective
I don't want to outfit my wardrobe with a bunch of ugly, ill-fitting kevlar or armor-ready jeans that cost north of 2 benjamins each. I like my clothes just fine. Depending on your style, these guards are great for keeping you safe from point A to B.

A couple of people mentioned they are "low profile" and fit "great under work pants or jeans." NOPE - I disagree. I wore these under my relaxed-fit Levis and they are totally noticeable and uncomfortable. But they are great to just wear on top of the jeans/pants and get rolling, that keeps me comfortable and safe.

Otherwise it's a simple, cheap, effective pair. True to size. They are L/R specific (asymmetric), designed to give a bit more coverage to the outer sides. One more thing - I like to wear them rotated outwards a bit (see pics) so they cover even more of the outer calves and knee joints.
February 12, 2014
Ride:
2001 Honda CBR600F F4I
Bang For The Buck
4 / 5
Protection & Durability
3 / 5
Features
2 / 5
Comfort
3 / 5
Style
2 / 5
Fit
Small
True
Large
Air Flow
3 / 5
Bargain price, but short on features and fit
So what you get for this price is a CE-rated pad, and that's a very good deal. I'm wearing these under my Klim Mojave & Dakars, and occasionally jeans.
I got the LG-XL - I'm 5"9" 150 lbs - that's correct for me.

What you don't get is:
3 straps - the bottom of the pad close to your ankle pushes out when the knee is bent unless you have them tucked into motocross boots. I'm wearing an 8" work boot, so that's a no-go for me.
Maybe if the lower pad was a bit longer. w/another strap.
Maybe if you were wearing skinny jeans that would not be as noticeable - have not tried that yet.

Although the knee pad strap is above the knee, is still rides down behind your knee and can be a small irritant.

Still, a very good bargain and better than no knee armor, or built-in pads that sit below the knee.
July 10, 2013
Ride:
1978 Yamaha SR500
Bang For The Buck
3 / 5
Protection & Durability
4 / 5
Features
2 / 5
Comfort
2 / 5
Style
3 / 5
Fit
Small
True
Large
Air Flow
3 / 5
Look for a better fit
First let me say that they seem to be rather well made(not well designed) for the price and I imagine they would provide good protection based on how they feel, but the fit isn't so great. They seem to be a little on the large side but I'll get into the real problem below.

The main issue is with the lower strap. The buckle ends up turning in it's strap which loosens the guard. While riding this isn't a huge problem but gets worse once you get off the bike. They should have designed the buckles in order to prevent them from turning. That would have made the product so much better and I would feel confident in recommending them to anyone. The current design is poor and seems as if they cheapened out on the fastening hardware.

My solutions has just been to tighten them a bit more than I would like as it helps prevent the loosen becoming too much of issue when the buckle rotates.

I would not recommend them to anyone based on the fact that there appears to be so many different knee guard options and to recommend these would be silly. I have not returned them as I don't think the issue is annoying enough to go through the hassle, but I certainly would not repurchase them and advise others to look for a better product.
September 13, 2013
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Features
5 / 5
Comfort
5 / 5
Style
5 / 5
Air Flow
5 / 5
Happy with my purchase!
Was planning to order these knee guards since a long time and so happy that i finally got them. They fit me perfectly and provides great protection. Thanks to AlpineStars and Revzilla. The brilliant pricing makes it a perfect deal.
May 10, 2016
Bang For The Buck
4 / 5
Protection & Durability
5 / 5
Features
4 / 5
Comfort
4 / 5
Style
5 / 5
Air Flow
5 / 5
Protection
If you need knee protection and don't want to buy expensive pants, try these. No messed up knees if you hit the ground in these. Excellent quality.
July 21, 2016
Ride:
2014 Yamaha FZ6R
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Browse 6 questions Browse 6 questions and 46 answers
Why did you choose this?
RevZilla Store
Price,function
nighthawk700sc on Jun 15, 2016
A buddy of mine that rides in the canyons all the time in L.A. uses these and swears by them. just in case I slide I would like ot have some protection under my jeans.
Derek Y on May 17, 2016
Price,function
nighthawk700sc on Jun 15, 2016
Want something to pair with my mesh A* pants for additional knee protection
hmyl on Jun 7, 2016
A buddy of mine that rides in the canyons all the time in L.A. uses these and swears by them. just in case I slide I would like ot have some protection under my jeans.
Derek Y on May 17, 2016
Great item for the price.
Luis H on Mar 29, 2016
I've messed up my knees falling off of bicycles, so I figured I should wear knee protection on a motorcycle.
Kang K on Mar 20, 2016
BUBBLE WRAP
Chris D on Mar 10, 2016
see good
Oswaldo R on Feb 10, 2016
great price
wesley c on Sep 30, 2015
for riding in shorts
Bobby F on May 27, 2015
Need good protection for the commute and they fit the bill
Scubidu on May 14, 2015
Will be using these knee guards when I ride to work instead of having to wear a pants over my work pants. I can just take it off and put it in my bag.
Jofferson G on Apr 7, 2015
I love anything Alpine!!
James M on Apr 5, 2015
I didn't want to wear riding pants, specially to work so i just slip this things on and I'm on my way.. I actually fell on them, prevents knee scraps =D
walter v on Nov 2, 2014
alpinestars is good
Jose Luis C on Nov 2, 2014
not for sport bikes, short ones
M E on Oct 14, 2014
Hopefully I won't need them but riding in the city gets a little crazy sometimes and you need to protect those knees!
Scott J on Aug 17, 2014
These look like they will be easy to wear and hide under a pair of pants.
Nathan K on Aug 6, 2014
While riding street, I'm not wearing my track suit. My legs, (knees) felt venerable so I wanted something that would be able to fit under a pair of jeans. From the reviews, this seems to fit the bill. And for the cost alone, you can't beat it. Astar's for life!
William T on Jun 25, 2014
Because they are cheap and look good. Also they have the top strap which many others in its price range did not.
s y on Jun 20, 2014
Low price and pretty solid reviews.
Caleb C on Jun 19, 2014
it's just uncomfortable
Yunfei J on May 23, 2014
Great price, solid reviews, 2 velcro strap easy on/off, people say they can wear under jeans or work clothes
Jin P on Feb 10, 2014
Good pads for cheap.
Avery S on Nov 6, 2013
ELEGI ESTAS RODILLERAS, POR LA CALIDAD/PRECIO, ESTOY MUY CONFORME CON LO RECIBIDO, RECOMIENDO AMPLIAMENTE A REVZILLA!
JOSAFAT M on Sep 6, 2013
Want something to pair with my mesh A* pants for additional knee protection
hmyl on Jun 7, 2016
Great item for the price.
Luis H on Mar 29, 2016
Can I expect these to fit under jeans?
A shopper on Feb 15, 2013
BEST ANSWER: Relaxed fit or boot cut and you should be fine. Straight leg/tapered or "skinny" jeans will be a challenge. These are basically moto-x style knee guards.
Does this come in a pair? or do you need to buy 2?
A shopper on Aug 13, 2013
BEST ANSWER: Yes, they come as a pair. I'm 6'1", 175lbs. L/XL is good at thigh, but borderline too big at calf. They work, there's just a fair amount of slack in the calf adjustment.
WIll you be able to knee-drag with these and would doing so ruin them? Is the outer surface a hard shell?
holyflyingcowpigs h on Jul 28, 2016
BEST ANSWER: No . They will wrip off your legs . Its attatched by velcro, their not that strong . They dont even make you feel a whole lot safer , just the first tumble i suppose theyll do their job , in my opinon , get the leather pants with real knee pucks
Hi, if i will wearing it with pants 'alpine stars A10 sport' it be comfortable or not?
Denis I on Jun 1, 2014
BEST ANSWER: Hi Denis -- I guess it depends on the pant you use. I have had good success using Duluth fire hose pants designed for knee pads so there is extra room in the knee area. K
What is the long from the neek protector to the bottom of the shin protector ? I am looking for an armor that protects my shin too and wear it under my jeans or pants
Cesar F on Jun 14, 2016
BEST ANSWER: Theyre not comforable under your pants unless theyre super baggy because they dont allow flexibility but even then the straps arent comfortable wearing them above your jeans eaither , but if its worth a try just keep in mind your going to need big boots to tuck them into because sneakers dont cut it, but they will cover all the way down your shin and into your boot and for the $ id save my knees for sure