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Alpinestars Bionic Freeride Shorts
  • Alpinestars Bionic Freeride Shorts
  • Alpinestars Bionic Freeride Shorts

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Alpinestars Bionic Freeride Shorts Videos

Alpinestars Bionic Freeride Shorts

Created to be worn under a pair of motocross pants to provide protection for offroad riding, skiing or downhill MTB, Alpinestars Bionic Freeride Short delivers performance, safety and comfort.


  • Protective yet extremely comfortable and flexible under pants
  • Lycra and mesh base construction
  • Ventilated, Bio-foam padding on hip, thigh and tailbone area for provides comfortable yet highly effective impact protection
  • Hard PU inserts reinforce the thigh and tailbone areas for additional impact and abrasion resistance
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Alpinestars Bionic Freeride Shorts 4.6 5 69 69
Great product and surprisingly comfortable These are great shorts with great protection features. Because of the hard panels they are a little bulky like a back protector is but well worth it for the extra protection they provide. October 13, 2014
So comfortable, you won't even know they are there during a crash I thought it was a fluke when I fell on my left side and got a giant bruise and pain on my side until a couple of practice sessions later I fell on my right side... the bruise and pain was even worse. Not for off road use. October 7, 2014
Quality product! I was shopping for some added protection to wear under my kevlar jeans and these shorts fit the bill. I ride a street bike and wear these for 3-4 hours at a time. I was somewhat hesitant to purchase because of the added bulk, but these are great. I do not notice them at all while riding and the armor is positioned perfectly. They do add some added bulk to the thigh area so I would recommend one size larger riding pants. I am 5'6" with a 29" waist and ordered a size small. Fit is perfect. October 6, 2014
Great, comfy, lots of protection I bought this shorts after questioning a lot, and all my questions were answered, when it arrived everything was just the way it was suppose to be, size, product, everything. October 6, 2014
Works great. It fits a bit small. Got to try it at the supermoto track and it held up well. I still got a very sore hip and it is now bruised butwithout it, it would have probably broke. September 1, 2014
Just what I was looking for I wanted a little more protection to wear under my kevlar jeans. These fit just right. Easy to get used to. I don't ride more than 20-30 miles at a time so the tailbone protection doesn't seem uncomfortable to me as some have expressed. I'm 5'10 165# with average/thin legs and the medium fit well and do not slide around. Fit a lot like my padded bicycle shorts. Shipped fast. Thanks Revzilla. July 30, 2014
Alittle tight for me but very functional and cool. They were a little tight for me but that is because I have big thighs. I wore them in 100+ degree weather and they were not too hot. I wore them for several hours and I was not uncomfortable. I like them and will continue to use them. July 11, 2014
you can wear all day Very comfortable, I have worn them all day. I forget they are on me. I have not laid down my bike so, I do not know how good the protection is. June 9, 2014
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Have a functionality, fit, or otherwise product-specific question about the Alpinestars Bionic Freeride Shorts? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Alpinestars Bionic Freeride Shorts
Already Asked: 11 Questions, 61 Answers
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RevZilla Store asked: Why did you choose this?
edward l: so I can pretend to be iron man in my living room Oct 19, 2014
Arnold G: to protect me ars if I come off my bike! Oct 8, 2014
Nathan K: I needed something to turn everyday wear into aggressive wear. Aug 17, 2014
Christopher L: One of the only hard shell impact shorts on the market. Aug 13, 2014
Claudio G: Fantastic Aug 3, 2014
Roger R: I want to have the most protection from every ride I go out. Jul 3, 2014
Bruce B: good price. works well. Jun 6, 2014
Yunfei J: great May 23, 2014
J C: After a recent racing accident I almost broke my hip this will help reduce the impact damage immensely Apr 30, 2014
orlando F: my riding buddy told me to protect my jewels and choose these to cover everything so I went with it. Apr 24, 2014
Eric C: Extra protection and versatility for use with different riding gear. Apr 17, 2014
Austin E: something i can wear daily under my jeans...hopefully Apr 16, 2014
michael c: For when price and style have little protection Apr 15, 2014
Felix L: recommended by your team. Mar 31, 2014
Shaun B: Chose these to wear under leather/mesh Icon Compound pants; will review once I receive them Mar 29, 2014
Brooks M: Wanted something that I could wear under my jeans or chinos for casual rides. Jan 30, 2014
Brady M: To wear under shorts in SoCal summer riding. Combined with Gaerne Boots and MSR Reflex Knee Braces. Jan 19, 2014
Jeremy W: After I low-sided last season, I realize that my injuries would've been prevented had I worn more protection. So, I decided to get the Alpinestars Bionic shorts after comparing several other shorts. They have the protection and they look really comfortable! Jan 10, 2014
Robert L: Protection Dec 11, 2013
Chris B: Needed it to complete the set Nov 28, 2013
Johnnie B: My "go to" armored underwear. I almost always use these armored shorts for my long highway trips. Comfortable, easy to wear, substantial upper-leg protection. Nov 4, 2013
camilo p: Amazing you can use it even for a daily ride!!!! Oct 22, 2013
Douglas B: Wanted added protection and the review suggested that it fit well and didn't bother rider comfort. Oct 17, 2013
Marvin S: Protection while dirt bike riding Sep 4, 2013
J A: To wear under my jeans. Aug 31, 2013
Jee L: I'd like to be as safe as I can while riding. Aug 16, 2013
A shopper asked: if my waist measurement is 32 what is the best size for me? Apr 23, 2011
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davekmdmd: I'm 5'8", weigh 158. 32 pants are a bit large for me. I wear 31 waist when I can get pants in that size. I purchased MEDIUM and they fit fine. The waist/seat was maybe a tad large and the leg opening maybe a tad small, but I wore them for 2 full days at Cornerspin 'roadracing in the dirt' school and they were nearly perfect for me. May 12, 2012
Reply to davekmdmd Good answer? Yes (0) No (0)
Kman: I'm a 32 and have prechased a med. It is a nice snug fit alittle tight in elastic around leg if u r planing on getting any hevyer I would buy next size up May 7, 2011
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Aerikk: your waist is not a "squishy" area. Stick with your actual pant size unless you are planning to wear more than two layers. May 24, 2012
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Lestat: I based my purchase on their sizing chart and with me, they got it right. I would recommend you get size Medium. Jan 12, 2012
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CandyR6: Unless you are REALLY lean with very little muscle mass and not butt, then you need a large like I did. Mar 21, 2013
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rusk: i got s/m and im a 30 and it fits good and comfortable it has a lot of adjustability :] Apr 26, 2011
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fatboypin: I have the same waist. My height is 1.77m, 70kg.
MD fits like a glove - snug.
Apr 15, 2012
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Chris K: I think a MD would give you a snug fit. Apr 25, 2011
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A shopper asked: How well would this fit under a 1-piece racing suit? My suit came with some cheap foam hip protectors that have since torn off and I'm looking for something with a bit of hip/thigh/tailbone protection but don't want it to be too bulky or stick out of the suit too much. Dec 27, 2013
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Darrin K: I could not directly say. I ride off road so my pants fit a little loose but these shorts are pretty slim fitting. The hard panels are a little bulky but I do not see how you can get around that without going to just soft padded armor. If you want some hard stuff between you and the ground, I would imagine you have to accept a little bit of bulk. That being said, I doubt they would make it stick out a whole lot. Dec 28, 2013
Reply to Darrin Good answer? Yes (0) No (0)
JP N: I do like these shorts, I like the protection they offer and they don't feel bulky wearing them. But they obviously add to your hip/thigh area girth. I wear them under dirt bike pants which are lose fitting, which provide plenty of room for me. I would say unless your race suit is fairly lose fitting in those areas that these probably wouldn't work. Dec 30, 2013
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Frank S: They may be too bulky. I purchased them to use under my motocross pants and they work fine in that regard for off road riding. I think that using the FOX armored shorts may be better as they are slimmer and I use those under my 2 piece leathers for added protection Jan 1, 2014
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Jean C: Depends on the fit of your racing suit, i wear size large alpinestars shorts, and my normal jean size waist 34, can hardly tell these are underneath, and they offer nice level of protection compared to nothing else. Dec 27, 2013
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PATRICK J: They fit very well under racing suits....as long as the suit as some room to work with, it should fit comfortably. Then once you zip up and hop on the bike, you won't even notice they are there. Hope this helps! Dec 27, 2013
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Joseph N: The hip pads are a little bulky but offer great protection. They should fit just fine. I wear them under jeans. Dec 27, 2013
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Denis I asked: Hi, if i will wearing it with pants 'alpine stars A10 sport' it be comfortable or not? Jun 1, 2014
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JD D: I'm never aware that I'm wearing them while riding. They're that comfortable. I sit just a little forward of upright and ride an R1200GSA and a Yamaha WR250R. Jun 1, 2014
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Denis I: what pants are you wearing? Jun 1, 2014
Gui F: They're comfy, have worn them to track days and never got in the way, Jun 14, 2014
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Bruce B: I agree with the answer above. You forget you are wearing them. Jul 3, 2014
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Enerius I: it's comfortable. Jun 3, 2014
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A shopper asked: Would these be suitable and good for street riding? Daily commuting, and joy riding? I can't always suit up in leathers. But would like to have some peace of mind knowing that if I slid across the pavement my hip and thoughts will still be useful. What other suggestions do you have? I like to be able to wear jeans when I'm in a rush and get called into to work for an emergency Mar 6, 2014
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Stefan L: Yes, they work well for that. They do not get too hot in the summer and provide better protection than most hip pads and riding pants. I purchased them and am using them because of the fact that I wanted more protection. As others have described they are well padded and you might have to get a pair of pants that will comfortably fit over them. Jeans with Kevlar panels will not help you in the initial impact, that's where these will come in and they could protect you from fracturing any bones in a crash. They run at least a size small though. Apr 6, 2014
Reply to Stefan Good answer? Yes (0) No (0)
JD D: As long as your jeans fit a little loose in the hips and thighs you should feel comfortable wearing the Freeride shorts underneath. Whether or not the tailbone armor plate causes discomfort is a matter of personal fit. I'm comfortable walking and sitting all day in mine. You might also consider jeans with Kevlar panels. Mar 6, 2014
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Bobby A: I bought these for street riding and ended up using them for dirt only. The sides are really thick. So unless you have a lot of room in your jeans it will not feel good or fit. Mar 7, 2014
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Thomas W: I wear these most of the days I am riding. Very comfortable more stealthy than they appear in the photo's. ATGATT.... Mar 14, 2014
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A shopper asked: Does these fit along the lines of compression shorts and boxer briefs? Jan 28, 2013
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MJBGSXR1000: More like boxers if you go up in size, but if you try true to fit, then like compression shorts.
I have a 38" waist and went for the XXL and they fit me perfect, even though they are slightly snug, but after one ride they have stretched a bit and I do not even feel them while I ride.
Mar 17, 2013
Reply to MJBGSXR1000 Good answer? Yes (0) No (0)
RevZilla: The fit of the Alpinestars Bionic Freeride Shorts is indeed similar to the Alpinestars Comp Pro Shorts. Typically, we recommend using your underwear size as a reference. Jan 31, 2013
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Arcee: I couldn't pull these pants up over compression shorts or shorts with hip/thigh/tailbone padding. Feb 2, 2013
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CandyR6: Smaller. GO A SIZE UP from your normal compression shorts/briefs. Mar 21, 2013
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A shopper asked: How to wash and dry ? Jan 9, 2013
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CandyR6: They have wash instructions, but I am spraying them with a fabric freshener between washes, then hand washing and line drying them when they do need need a real wash. If you do machine wash them I would suggest putting them in a load with other large soft times like towels and pants. I would personally avoid machine wash as much as possible though, for both their sake and your machine's sake. Mar 21, 2013
Reply to CandyR6 Good answer? Yes (0) No (0)
kevin c: For most synthetic sports clothing, warm to cool water, whatever soap you normally use BUT I rinse twice to ensure I remove all of the soap residue. I prefer to air dry indoors whenever possible. The dryer is hard on gear. Mar 15, 2013
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RevZilla: Good question! We contacted Alpinestars and they recommended hand washing with a cleaner that does not use detergent, then air dry. Machine washing and drying may damage the product. Jan 9, 2013
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James D asked: How does this armor compare to CE 1&2 level armors? Sep 29, 2014
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glen i: It's obviously very rugged, if not a bit overboarddue the enourmity and thickness of the pads. You really have to size the pants up to handle that thickness especially if you have large upper legs. On my superbike, I simply can't use them because my suit isn't sized accordingly. so I use my FOrcefields with a couple layers of padding removed. For offroad, I use my forcefields with all layers. I suppose the Alpinestars offer greater protection than my soft armour for punctures and point loads due to the hard plastic shell, but I tend to gravitate towards the more comfortable gear and hope for the best. For a racer, I'd choose Alipinestars for greater protection and size my suit/pants accordingly. Sep 29, 2014
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Mike L: This armor is very protective but very uncomfortable and too hot in southern California Sep 30, 2014
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A shopper asked: The ítem have a drag protection?? Sep 26, 2013
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Jeff H: Not explicitly but the padding is very durable molded plastic that I would think would hold up well in a slide. Sep 26, 2013
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Monroe S: My guess is, No. It's supposed to provide protection from impact not dragging. The nylon that encases the armor would probably tear away if your riding pants/jeans tore open in a slide. I wear Kevlar jeans for dragging protection. Oct 2, 2013
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Thamer I asked: Would you recommend using these shorts with, alpinestar Atem race suit? Is there added value? Sep 20, 2014
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Alton B: I'm not familiar with that race suit, but I bought these shorts to wear under my Dianese Delta pro pants and like them for their comfort and the added protection they add. Sep 20, 2014
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A shopper asked: Is there padding in the seat for ride comfort ? May 20, 2013
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torquemaster: No. Side padding and small tailbone padding only. Jun 1, 2013
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Product Style RevZilla Item # Manufacturer Product # Availability
SM 605985 650707-13-S/29400174 In Stock: Ships within 24 hours
MD 605986 650707-13-M/29400175 In Stock: Ships within 24 hours
LG 605987 650707-13-L/29400176 In Stock: Ships within 24 hours
XL 605988 650707-13-XL/29400177 In Stock: Ships within 24 hours
2XL 605989 650707-13-2X/29400178 In Stock: Ships within 24 hours