Log In / Register
0 Checkout
Alpinestars S-MX 2 Vented Boots
  • Alpinestars S-MX 2 Vented Boots - White

Please select a Size to check availability, or to add this item to your Shopping Cart or Wish List.


Select Size:

Size Chart
Savings (14%):

Select qty:

Please select a Size to view availability.
Add to Wish List

Video Review

Alpinestars S-MX 2 Vented Boots Videos

  • S-MX 2 Boot from Alpinestars
  • Low cut street riding boot, giving ultimate flexibility and uninhibited ankle movement, while retaining comprehensive foot protection and riding performance technology
  • Designed to be used in conjunction with Alpinestars exclusive street knee/shin protector
  • Inner side zipper, with Velcro© over flap closure, make entry and exit highly convenient
  • Heel protection detail and toe shifter pads
  • Replaceable TPU toe-sliders
  • Molded rubber sole with internal shank for rigidity and protection

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
White / 38 304391 222408-20-38/34010075 Available: Requires 1-5 business days lead time prior to shipment
White / 39 304392 222408-20-39/34010076 Available: Requires 5-6 business days lead time prior to shipment
White / 40 304393 222408-20-40/34010077 Out of Stock
White / 41 304394 222408-20-41/34010078 Out of Stock
White / 42 304395 222408-20-42/34010079 Out of Stock
White / 43 304396 222408-20-43/34010080 Out of Stock
White / 44 304397 222408-20-44/34010081 Out of Stock
White / 45 304398 222408-20-45/34010082 Out of Stock
White / 46 304399 222408-20-46/34010083 In Stock: Ships next business day
White / 47 304400 222408-20-47/34010084 Only 2 Left: Ships next business day
White / 48 304401 222408-20-48/34010085 Available: Requires 1-5 business days lead time prior to shipment
White / 49 304390 222408-20-49/34010086 Available: Requires 5-6 business days lead time prior to shipment
White / 50 304402 222408-20-50/34010087 Available: Requires 5-6 business days lead time prior to shipment


Orders $39.99 and over qualify for our fast free shipping offer. Click Here for FREE Shipping Terms and Conditions.

Please see our International Orders page for orders shipping outside the US.

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 2 Vented Boots 4.5 5 18 18
Great multi purpose riding shoe. These boots are fast to get on and off and offer a more than adequate amount of both protection and comfort. I keep a pair of sneakers in my backpack for work and use these shoes to commute and to ride the canyons on weekends. June 19, 2016
Excellent riding shoe! Very pleased with my purchase. The shoe/boot is well made and stylish. May 24, 2016
Great boots for a great price These boots look fantastic! I ordered one size down as suggested by the review section and it fits perfect. Boot is very comfy and feels solid all around. Great product for a great price. December 28, 2015
Excellent boot for the street riding Excellent product from Astars. Very comfortable easy on and off. I would recommend this for street riding if your on your jeans because your leather racing pants would look short on this one. It's a little wide with fitting but overall it's a nice style and price is good. June 3, 2013
For a vented boot... I bought these after having commuted in full race boots for a while since they weren't ideal for either the 35 degree winter or 110 degree summer. Although these are good for the purpose that they intend to serve, which would be short city rides, but the boots leave a lot to be desired. It's a good looking boot, and extremely comfortable. I've had problems finding well fitting shoes and boots my entire life but was pleasantly surprised to find out how wide it is at both the toes and instep. They feel pretty durable; rigid enough to feel like it offers protection while still being comfortable enough to walk around in which you will probably be doing if you're interested in short boots. They're thick and even work to dampen some vibrations from your foot pegs. The back of the boot is cutout to allow your achilles tendon to flex when pointing your toes down to shift, although pointing them up is still tough. The soles grip very well to any surface. They fit almost an entire US size and 2-3 Euro sizes too large. Although it has a ratchet buckle for adjustability, it really only works to loosen the lip of the boot since tightening it causes it to fold inwards and put uncomfortable pressure on your feet. The buckle itself is also extremely hard to open. Getting in and out of the boot is easy enough. Although it feels like it would offer great crush protection, your ankles feel extremely exposed. I wouldn't want to trip over and twist my ankle in these, much less experience a crash in them. The vents on the outer side of the boot don't seem to do anything. There's no intake to offer air flow, so the only purpose they serve is as an exhaust, though it's a stretch to label them as such. Even at speed I could feel warm moist air pooling around my feet. The only air flow you get is what comes in from the top of the boot onto your shin and ankles. If you want a vented boot but don't like the white color scheme, you could buy the non-vented SMX2 and not miss out on any features. Unfortunately these boots just aren't for me, but they could work for individuals not conscious about protection that don't want to wear sneakers on their ride. March 14, 2013
As far as fit goes. I haven't been able to start my riding career so these are the first pair of riding shoes I have ever had. I wear a size 11 in Sketchers and a size 10 in Etnies and I ordered a size 44 (9.5 US indicated on the shoe itself) in the SM-X 2. My feet fit great as far as the width goes. There is a little bit of room, laterally, in the boot for my feet so it leaves just enough room for maybe a gel pad. Shoe looks amazing. I can't comment on function as I haven't ridden in them yet though. February 14, 2013
GREAT RIDING BOOTS! These boots are great, a little big but great. I ordered a 45 first whic says it's a 10.5 US, but it was too big so I returned it for a 44 (9.5) and they fit great. I was wearing Sidi ST Air race boots which are great as well but it was scractching my carbon fiber parts real bad so I got these to stop that. Overall I am pleased with my purchase but I would advise you to order a size down from what you normally wear. February 7, 2013
Solid Riding Boot For the casual rider this boot is great, looks and fits great without getting in the way of the wearers natural range of motion. December 31, 2012
2 3 next>>
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 2 Vented Boots? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.