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Alpinestars S-MX 5 Vented Boot
  • Alpinestars S-MX 5 Vented Boot - Black

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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 Size Chart:

Use this chart for Euro-sized footwear
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
Use this chart for USA-sized footwear
USASize  EU Size
5 36
5.5 37
6 37.5
6.5 38
7 38.5
7.5 39
8 40
8.5 40.5
9 41
9.5 42
10 42.5
10.5 43
11 43.5
11.5 44
12 45.5
12.5 46
13 47
13.5 47.5
14 48

BOOT SIZING NOTES: In RevZilla's experience we have found the EUR->US sizing conversions as presented here to be slightly off. Below is RevZilla's recommendation for Men's Boots. 

EU Size

USA Size
42 8
43 9-9.5
44 10-10.5
45 11

As always, this size chart is only a guide and provides no guarantees of a perfect fit.

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

Click here to see the full Alpinestars Size Chart
Product Style RevZilla Item # Manufacturer Product # Availability
Black / 36 440135 222309-11-36/34040395 Available: Expect 3-4 business days lead time prior to shipment
Black / 37 440136 222309-11-37/34040396 Available: Expect 3-4 business days lead time prior to shipment
Black / 38 440137 222309-11-38/34040397 Available: Expect 3-4 business days lead time prior to shipment
Black / 39 440138 222309-11-39/34040398 Out of Stock
Black / 40 440139 222309-11-40/34040399 Available: Expect 2-5 business days lead time prior to shipment
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 In Stock: Ships within 24 hours
Black / 49 440148 222309-11-49/34040408 Out of Stock


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We show real-time availability on this product page when you select the size/color item you want.  Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.

See our full Shipping Policy for further details.


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.

Write a Product Review for a chance to win our monthly $100 giveaways.
Alpinestars S-MX 5 Vented Boot 4.8 5 54 54
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
Birthday present This product is excellent all around, I bought them for my boyfriend. The sizing chart helped me find the perfect pair. He has worn them several times now and raves about how much he loves them. They are comfortable with excellent protection. April 6, 2015
Great purchase! I bought these for my boyfriend and he seems to love them. They look really nice, great quality and seem to be good protection. He wears a size 13, so I ordered the size equivalent to a 12.5 since 13 isn't an option. He says they fit great though! December 29, 2014
Very poor customer service from AlpineStars Excellent customer service from Revzilla---extremely poor customer service from AlpineStars. Received boot from Revzilla. Within an hour of putting the boot on, the toe slider fell off. I don't drag my boots (ride a touring bike) so it wasn't from usage. I contacted Alpinestars via their email contact form for a replacement. No response. Contacted them again. No response. Called them and they stated they don't replace these....even if one fell off or was defective. I talked the customer service rep into replacing it. A month later, it still hadn't arrived. Called customer service and was told it was shipped and delivered. I didn't receive a tracking number or an email...was told they don't do that for replacements....it was delivered. Well, it wasn't delivered. I asked for them to re-send (remember this probably costs them a dollar) and they stated that they would not and that this is actually Revzilla's problem. Really? So....I call Revzilla and problem fixed in 2 minutes. I'll not ever buy a product from Alpinestars again, but will probably only buy motorcycle gear from Revzilla. November 6, 2014
Excellent item for protection and style These boots are great for riding. I wear them every time I go riding. They are very comfortable and they bring a lot of protection. I only wish they were more breathable but that's my only con for these boots. September 22, 2014
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Use our Product Q&A for a chance to win our monthly $100 giveaways.

Have a functionality, fit, or otherwise product-specific question about the Alpinestars S-MX 5 Vented Boot? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Alpinestars S-MX 5 Vented Boot
Already Asked: 2 Questions, 22 Answers
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RevZilla Store asked: Why did you choose this?
Alberto P: Because i liked the disegn! Oct 13, 2015
John R: After reading countless reviews, this pair of boots checked off more boxes for me than the other options. May 22, 2015
Kurt R: price point, has good reviews, quality of alpinstars Apr 7, 2015
Marcus G: One of the top brands in the sports bike community. Mar 10, 2015
Daniel M: We have 4 pair of Alpinestars between my son and me. I have been riding with Alpinestar boots for over 40 years. When I decided to buy my first set of street boots Alpinestars were the brand of choice. Feb 26, 2015
Ian H: Good street boot with protection when a track boot isn't necessary. Feb 1, 2015
Alvaro H: Great price, good quality Nov 4, 2014
Peter N: Nice venting, nice fit, flexible and good control feel. Oct 17, 2014
Kat S: My girlfriend has a pair and recommended them to me. THANKS NICKERS Sep 26, 2014
Christopher C: Needed boots, Astars is amazing and for the price you can't beat them. Jul 21, 2014
brian h: Nice boot, but a little inconvenient to put on & off on a daily basis due to the velcro & zippers. Returned for the Dainese TR Course. Jul 9, 2014
A A: They'll keep my feet from ripping off. May 17, 2014
Jarrod H: My street boots! Mar 7, 2014
Carey R: Price and protection Feb 12, 2014
Pam S: Looks comfortable & goes with my bike Dec 10, 2013
CLINT T: I was looking for a new summer weight boot. My riding style does not necessitate toe sliders but the boots are very comfortable, light and ventilate nicely. Easy to slip on and off, plus they look cool. Nov 14, 2013
William S: Because I was using my military boots for riding. They were so uncomfortable, and did not breath at all. My BRC instructor was wearing these same boots said he loved him. So I tried them, and fell in love. My feet don't sweat, and the shin guard helps out a lot Nov 1, 2013
Richard F: had my size and saw many good reviews. Aug 9, 2013
P A: Needed a boot for commuting Aug 9, 2013
A shopper asked: What is the difference between the Black and the Black Vented boot? Jan 17, 2014
Answer this · Send to friends Good question? Yes (0) No (0)
Derek M: The vented is a summer boot. Great for hot days. However, they can be cold in the winter. Feb 16, 2014
Reply to Derek Good answer? Yes (1) No (0)
Tommy N: the vented model has perforated leather Jan 17, 2014
Reply to Tommy Good answer? Yes (1) No (0)
tsuyoshi t: I currently wear the SMX 2 short boot in a 39. Its tight but not uncomfortable. What size do you recommend in this boot? I am also looking at the SMX 6 and the SMX Plus in the closeout section. I do mainly road touring but I would like to try a track session. Jan 29, 2014
Reply to tsuyoshi Good answer? Yes (0) No (0)