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Discontinued Product!

The Alpinestars S-MX 5 Vented Boot
has been discontinued and will not be returning
Replacement Suggestion:
Vented Motorcycle Boots
Out of Stock
Alpinestars S-MX 5 Vented Boot
  • Alpinestars S-MX 5 Vented Boot - Black

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Video Review

Alpinestars S-MX 5 Vented Boot Videos

Alpinestars S-MX 5 Vented Boots

The S-MX 5 has been created as a performance road and track boot, incorporating the latest technical footwear design and material know-how. Following on from the other performance boots in the Alpinestars range, the S-MX 5 is notable for its comfort, hugging fit, safety performance and ease of adjustability.


  • Durable, high-tech micro-fiber upper construction offering a high level of flexibility
  • Double injected PU shields the shin, ankle, calf, toe and heel from impact while minimizing abrasion
  • Inner protection is given by a double injected panel connected to the heel counter, hidden beneath the outer shell and running up the outer ankle
  • Quick drying polyamide lining is laminated with open cell foam and high density contoured padding to absorb shocks to the foot area
  • CE certified
  • Innovative air vents at the ankle, heel and forefoot are covered with a specially designed mesh to provide unmatched levels of rider comfort
  • Large ‘throat’ profile instep and Achilles flex bellows for superior flex and comfort
  • MTP mesh liner and anatomical, removable, PU Foam foot bed keeps the foot cool and comfortable
  • Innovative inner (medial) side entry opening/closure system that features an elastic mounted zipper with an extra wide Velcro® brand flap fastener, to give a precise, comfortable fit and wide opening aperture for ease of access
  • Highly ergonomic, lasting for ultra precise fit
  • Exclusive compound rubber sole features structured shank reinforcement for added support to the arch area
  • Interchangeable bi-injected PU toe slider with snap-in assembly

Alpinestars Men's Footwear Sizing

Sizing Notes!

We have found the EU-->USA sizing conversions as presented here to be slightly off. Our recommendation for Alpinestar's Men's Footwear: 43: 9-9.5 44: 10-10.5 45: 11

EU Size USA Size
36 3.5
37 4
38 5
39 6
40 6.5
41 7.5
42 8
43 9
44 9.5
45 10.5
46 11.5
47 12
48 12.5
49 13.5
50 14

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

How To Measure

FT Feet What size shoe do you wear?
Product Style RevZilla Item # Manufacturer Product # Availability
Black / 36 440135 222309-11-36/34040395 Out of Stock
Black / 37 440136 222309-11-37/34040396 Out of Stock
Black / 38 440137 222309-11-38/34040397 Out of Stock
Black / 39 440138 222309-11-39/34040398 Out of Stock
Black / 40 440139 222309-11-40/34040399 Out of Stock
Black / 41 440140 222309-11-41/34040400 Out of Stock
Black / 42 440141 222309-11-42/34040401 Out of Stock
Black / 43 440142 222309-11-43/34040402 Out of Stock
Black / 44 440143 222309-11-44/34040403 Out of Stock
Black / 45 440144 222309-11-45/34040404 Out of Stock
Black / 46 440145 222309-11-46/34040405 Out of Stock
Black / 47 440146 222309-11-47/34040406 Out of Stock
Black / 48 440147 222309-11-48/34040407 Out of Stock
Black / 49 440148 222309-11-49/34040408 Out of Stock


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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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Alpinestars S-MX 5 Vented Boot 4.8 5 58 58
Great boot! These are my go to boots when I'm going out for more than just a run to the store or around the block. The zipper and velcro entrance make them very easy to take on and off. I use these to commute to work and then change into dress shoes when I get there. I trust these will protect my feet if/when I go down. They have plenty of support around the toebox, heel cup, and ankle, as well as some up the shin. They were a bit stiff at first and I wasn't used to this kind of boot when I bought them, but now I feel very comfortable in them. The airflow is great in these and keep your feet cool. Make note of that though, these are not good for colder temperatures due to that. My one negative about the boots is the lower velcro adjustment. It creates a bit of overlap pinch when I tighten them that I feel on the inside of my foot just under my ankle. Not the end of the world, just a little uncomfortable and bothersome at times. Overall, great boot that I would definitely recommend to others. March 13, 2016
Great Boots I bought these boots about 2 years ago, and they have been working great for me. They have held together and only have the usual wear and tear. The toe guards have stayed in place and the actual boot is very comfortable to ride with. they can be a little stiff to walk around with but it was to be expected. The venting is pretty good, and they look great. March 10, 2016
CL Purchase, Well worth the upgrade CBR XX Blackbird 2004 I have only worn these once so far. I replaced a cheap pair of boots that were fine--just, well cheap and needed to consider my boots (feet/ankles) like I do my gloves, jackets, pants and helmets. The old ones (Xelement) were better than tennis shoes. RF-1100, technics jacket, pants and speedster gloves begged for a better option. I found a pair on craigslist that were literally worn 5 times (he's out of riding--got a kid) and there is another pair size 12 in like condition still available. Each were only $100. I'm so glad I did it. The only issue for me is venting-- I've ridden in snow, rain as well as the heat. I rode with them in 20+ degree weather and noticed a slight flow. I carry the booties for the extreme weather. I'll need to get a WP pair. At speed (I'm not saying) my old ones with a velcro on each side opened up when I needed to stretch-out a leg kink on a ride in October to upstate New York (900 mile round trip with the return trip having 2.5 hrs of snow). The boot acted like a speed brake. Not cool. So far, I'm impressed. New beats worn, but no so stiff like the buckle Alpinestars I tried on earlier this year--not to mention I am more of a sport/tourer. My last two bikes were CBR 1000F's--one jetted/mild mods. These SMX-5's do seem a little roomy in the foot and firm/snug in the ankle so fitment might take a few minutes. They also are new and need break-in. I've ridden as much as 10,000 miles in a year and zero in others. I've only had the Blackbird a few months, but I'll add more comments later if something is worth it after some real miles. Sorry Revzilla for the CL ad. Not my boots to sell. Sorry, too, you missed this sale. But I'll be spending with you soon, I'm sure. Thanks for the informative videos. January 18, 2016
Glad I got these! Now I know why these are so popular. Super comfy but feel secure as well. Not much ankle reinforcement or protection so I don't get to aggressive on turns and such in these but a great commuter boot. Fit like regular boots, might be a little large in the toe. Can't really feel any airflow until temps drop below *50. Been wearing these daily for months and don't have problems as others state such as material coming off the toes but I'm careful when "walking" my machine when in traffic/parking...SMX-5's still in fantastic shape! December 4, 2015
excellent boots I have had these boots for a few months now and have put on about 1300miles with them. I wear size 10.5 shoes and I bought size EUR 44, US 9.5. they fit perfect. they were comfortable out of the box, both on the bike and walking around. side zipper and Velcro on the side is great. no laces or bs to deal with. just slip them on, zip them up and done. they breath very well. 90deg plus days no problem at all. I rode last weekend for a few hours in low 50deg temps and they were alright and I had just normal socks on. with warm socks I think these boots would be fine in 40deg temps. October 30, 2015
Saved my feet! I've been in 4 lowside crashes, not that I'm boasting, and I've worn the SMX-5 boots through all of them. They were 30-50mph crashes where it involved loss of traction, a hard impact on the side of the body and a 20-100ft slide. The only injury I sustained to my feet was at maximum a twisted/sore ankle, but not bone injuries or lacerations. These boots are a bit over kill for wearing everyday on the street, but the level or protection you get is awesome for the money you spend. After getting roughly 200-500 miles of riding and use they really break-in and become decently flexible. Only nit pick I have about them is that they don't flow air all that well, so in-turn they become a little hot and sweaty in the summer. Final thoughts: These boots saved my feet and I can't thank Alpinestars enough. Going through 2 pairs in 4 years I'm extremely pleased with them. October 21, 2015
Excellent protection and comfort I've been riding with these boots for two years now and they are my go-to riding boot for just about any situation. They are extremely comfortable, although not really meant for wearing all day. I feel very protected, much more than when I'm wearing my technical sneakers. The zippers, leather, and velcro are still in great shape. They work well in the summer, but in the winter I wear them with some thick socks. Highly recommended April 30, 2015
Long Term User Review - A Must buy I've been using this boot for about 4 years now. After many many miles, these have held their own. Velcro & zipper on the side still work. Fit is great. Durable. I have a wider foot than most. I'm finding Alpinestars have a better fit than others. I'm a very satisfied with the design, build quality after these many years. April 19, 2015
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