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Alpinestars SMX Plus Boots
  • Alpinestars SMX Plus Boots - Black

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Video Review

Alpinestars SMX Plus Boots Videos

Alpinestars SMX Plus Vented Boots

The latest version of the Alpinestars SMX Plus Boots features a completely updated protection system for the heel and ankle areas. For superior safety and freedom of movement, the newest version of the Alpinestars SMX Plus features an innovative Multi Link Control system and high modulus TPU protection integrated into the sleek profile of the boot. An inner Kevlar speed lacing closure and micro-adjustable ratchet fastener combine to ensure a comfortable, conforming fit on both the road and track.

Unique Multi Link Control System

Alpinestars unique Multi Link Control System provides advanced support for the ankle, limiting hyper-torsion, hyper-extension and hyper-flexion as well as providing additional impact protection to the ankle and Achilles.

Premium protection

Contoured shin plate protector is injected with high modulus TPU for superior impact and abrasion resistance. Wide, ventilated, heel counter extends to the ankle and is combined with a shock absorbing padded insert and self-molding foam ankle protectors. Replaceable heel slider and external side heel slider are positioned to dissipate shock and promote sliding during an accident.

Race inspired details

Newly designed, replaceable TPU toe slider with snap-in assembly provides more coverage around the toe area. Inner Kevlar speed lacing closure and a unique lateral zipper offer precise and secure fitting. Micro adjustable ratchet buckle closure on the calf lets you finely tune the fit of the boot for maximum security and comfort. Alpinestars anatomical and replaceable countered footbed provides arch support and greater feel through the forefoot.


  • High-tech microfiber upper construction is lightweight and extremely durable
  • Forefoot laminated with shock absorbing open cell foam while the ankle area has a highly breathable lining for improved comfort
  • Large front and rear asymmetrical accordion zones are optimized to maximize flexibility for superior comfort and safety
  • Durable sole is designed for improved riding feel and features evenly textured rubber for consistent grip 
  • CE certified

Available in Perforated Version for warm weather riding

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Alpinestars SMX Plus Boots 4.9 5 9 9
Awesome! Really good product! Really great boots! If you're looking for comfort and beauty, that's for you! February 16, 2015
Just do it I purchased this boot locally. I can't say enough good things about it. I've done about 300 miles on this boot in the last 3 days, and today wore them for about 12 hours without discomfort. I was not expecting that. I have a pair of HD-ish boots that I love and have had re-soled a couple times, so they're broken in and exceedingly comfortable; but they lack real ankle support and can't touch this boot in terms of features. I wear wool motorcycle socks with this boot and even with weather in the 80's and extended wear time, they're very comfortable. I'm sure they're not even broken in yet. I'm more of a commuter and sport enthusiast than anything else, and I'm very happy with this purchase. When you hold this boot and the SMX 5 in your hands, there's just no comparison. October 21, 2014
Feel broken in right out of the box! I was looking for a boot with plenty of protection for track days, but yet would be comfortable enough to wear on the street for long spirited rides where walking throughout the day may be involved. These fit the bill perfectly! Aside from a test ride on my work commute, about 30 mi each way, my maiden voyage with these was on WI's infamous slimey crude run. For us this involves about 400 miles of riding with lots of walking at each of the stops looking at all the wonderful toys people brought out to play. I had the boots on for over 12 hours straight, on and off the bike, and my feet never complained once. I haven't crashed in them, but the protection seems very sufficient with minimal bulk. The internal booty provides a great fit. I originally bought a pair of Sidi and, though they looked beautifully crafted, they just didn't feel right. Returned for these a* and couldn't be happier; thanks revzilla. (The Sidi's were sexy though...lol) October 19, 2014
Fit well right out of the box. A little narrow, but that is my foot. Took them to a track day with only about an hour of walking around the house in them and they were very comfortable. I have a wider than normal forefoot and so they were a little tight on one foot - god works in mysterious ways and my feet are about a half size different, so not everything fits in the way of foot coverings, but I like these and would say they are very satisfactory. Hope I never get to be an expert on how they hold up in a crash. No time on them to judge durability, but they seem well made. I am 66, have ten bikes now, more on the way, and owned over 40 since 1965. Revzilla makes is so much easier to buy and understand than in the old days. September 8, 2014
Well worth the price These are my first pair of boots and they are fantastic. I wanted more ankle protection than the SMX-5, but didn't want to break the bank with the Supertech-R's so these were perfect for me. Fit is snug but true to size and requires little to no break in time. Great feel on the bike and great protection should I have an off. Airflow is pretty low in the non-perf version so they can get warm on hotter days, but not to the point of being uncomfortable thanks to all the moisture wicking materials in it. These are definitely worth the investment if you care about your feet. August 18, 2014
excellent, comfortable boots I bought these boots to have more protection and possibly do some track days. I lost a little bit of tactile feel of the shifter and rear brake vs the fast lane shoes but I feel these will save my feet and ankles in case of a get down far better than the shoes will. Extremely comfortable, just can be a little noisy walking around in them. First pair of purpose built boots and am very pleased with the lacing system and ski boot style ratchet July 21, 2014
Great Boot These just came in today so I don't have much time with them yet. Have had them on for almost 6 hours now at the office and man are these comfy! Lunch ride was amazing even in the Texas heat these are not to bad. Protection features are top notch! Extremely comfortable and ankle support is great. Boot is comfortable. Protection is great. Easy to get in and out of. Another great A* Product! September 27, 2013
Great Fit, Great Materials I bought these to get some added ankle support/protection. I had SMX-5s before. I bought the exact same size (44). I take a 10.5 normally in a shoe, so it's technically 1 size smaller than the size chart said for me. The fit is nice and snug. The inner bootie really helps you get the boot fitting right. The zippers up the side can sometimes be a bit tough to get up especially with pants tucked in. That makes me wonder if a size larger was in order, but I really think if I went bigger it would get too loose. Love the fit/finish of them too. I was looking between these and some Sidi STs and in the end I liked these better. They fit better and I like the materials better as well. August 20, 2013
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Have a functionality, fit, or otherwise product-specific question about the Alpinestars SMX Plus Boots? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Alpinestars SMX Plus Boots
Already Asked: 2 Questions, 7 Answers
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RevZilla Store asked: Why did you choose this?
Mark H: Other Sidi and Dianese boots were uncomfortable and poor quality. I have Alpinestars mx boots and like them. Jun 16, 2015
johnathan b: These boots are amazing and they fit perfect and they are by far the best for the money so comfortable Jun 1, 2015
Erik S: Seemed to be the best value for the money spent. I was looking for an optimal track day boot without going to crazy on price. May 13, 2015
Gregory B: Reviews looked great. The boot looks like it offers plenty of protection and ease of use. Dec 22, 2014
michael j b: your reviews - very happy with them Sep 30, 2014
Alex H: Updated safety features to a good boot that isn't too technical for daily commuting. Aug 26, 2013
A shopper asked: Hi

Can you measure the length of the inner sole for a boot size 45, 46 and 47 (EUR) in centimeters?

I dont know what size to order :)

Best regards Martin
May 15, 2015
Answer this · Send to friends Good question? Yes (0) No (0)
José R: 28.5, 29 and 29.5 May 21, 2015
Reply to José Good answer? Yes (0) No (0)

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 897260 2221013-10-36 Available: Expect 3-4 business days processing time prior to shipment
Black / 37 897261 2221013-10-37 Available: Expect 3-4 business days processing time prior to shipment
Black / 38 897262 2221013-10-38 Available: Expect 3-4 business days processing time prior to shipment
Black / 39 897263 2221013-10-39 In Stock: Ships within 24 hours
Black / 40 897264 2221013-10-40 In Stock: Ships within 24 hours
Black / 41 897265 2221013-10-41 Available: Expect 1-2 business days processing time prior to shipment
Black / 42 897266 2221013-10-42 In Stock: Ships within 24 hours
Black / 43 897267 2221013-10-43 In Stock: Ships within 24 hours
Black / 44 897268 2221013-10-44 In Stock: Ships within 24 hours
Black / 45 897269 2221013-10-45 In Stock: Ships within 24 hours
Black / 46 897270 2221013-10-46 In Stock: Ships within 24 hours
Black / 47 897271 2221013-10-47 Available: Expect 1-2 business days processing time prior to shipment
Black / 48 897272 2221013-10-48 Available: Expect 1-2 business days processing time prior to shipment