Alpinestars SMX Plus Boots - 2017
- Contoured high modulus shin plate protector gives superior impact and abrasion resistance
- Alpinestars unique Multi Link Control system provides advanced external protection and support for ankle articulation, limiting hyper-torsion, hyper-extension and hyper-flexion as well as providing Achilles and ankle impact protection
- Wide heel counter with lateral ventilation extends to the ankle and is combined with a shock absorbing padded insert and self-molding ankle protectors
- Integrated replaceable bi-injected TPU slider features new easy screw fixing concept
- Replaceable heel slider and external side heel slider are positioned to dissipate and absorb shock and promote sliding during an accident
- Large front and rear asymmetrical accordion zones are optimized to maximize flexibility for maximum comfort and improved safety
- Advanced microfiber upper construction for lightweight high performance protection
- Durable sole, designed for improved riding feel, features evenly textured rubber for consistent grip, with aqua dynamic grooves to drain the water efficiently
- Inner instep made with Dupont™ Kevlar® with metal eyelet lacing closure and a unique lateral zipper offer precise and secure fitting
- Elastic mounted zipper gives easy closure with excellent fit; Velcro tab locks the zip pull closed, keeping it flat and secure
- Micro adjustable ratchet buckle closure on the calf features a hidden strap for security
- Advanced synthetic forefoot lining, laminated with open cell foam for shock absorption and highly breathable lining in ankle and leg areas for comfort
- Alpinestars anatomical and replaceable countered EVA footbed provides arch support and forefoot pedal feeling
- SMX Plus boot is CE certified to EN 13634:2010
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Sizing Information
The overall fit/size of this style seems “true” to their published size chart (see below), so if you are comfortable with a certain size from previous boots, then choose the same size. I’d consider the width of the men’s sizes to be normal to slightly wide (D or E).
| Euro | Men’s US | Women’s US |
| 36 | 3.5 | 5 |
| 37 | 4 | 6 |
| 38 | 5 | 7 |
| 39 | 6 | 8 |
| 40 | 6.5 | 8.5 |
| 41 | 7.5 | 9 |
| 42 | 8 | 10 |
| 43 | 9 | 11 |
| 44 | 9.5 | 11.5 |
| 45 | 10.5 | - |
| 46 | 11.5 | - |
| 47 | 12 | - |
| 48 | 12.5 | - |
| 49 | 13.5 | - |
| 50 | 14.5 | - |
Our Two Cents
The SMX Plus racing boot gets an ever-so-subtle design upgrade for 2017. The boots look nearly identical to the previous version, and I had to inquire with Alpinestars as to the difference. The answer? ...new graphics for 2017, the Multi Link system is now lower profile, and they have a smoother contact with the bike.
I tried on my size in this boot and just like with the previous model, I really like the fit. This boot is one of the few race boots with the internal laces and adjustable calf area. I have a 16” calf and the top opens up wide enough to accommodate me and has about 1 more inch left as well, which is quite a lot for a race boot like this. The inside is lined with a breathable liner with just a slight bit of padding behind it.
With the side zipper, internal laces and upper ratchet, you’d think they’d be a pain to put on and take off, but it’s quite the opposite. The speed laces work very well and quickly as does the top ratchet. And one other thing that helps with fit and comfort… the side zipper on the boot is attached to a narrow panel of stretch material which helps when pulling up the zipper. It makes the boot snug, but a bit flexible so you don’t have to sort of tease the zipper sides together with your hands as you try to zip them up (as you sometimes do with rigidly affixed zippers).
The boots of course have full-on racing features, but are comfortable and functional so they could be used for sport/street riding as well. There is a substantial amount of protection on either side of the ankle and heel and also in the shin area. The “Multi Link” control is a series of external plastic pieces that slide and pivot to allow movement in some directions (for shifting, walking, etc), but restrict movement in unfavorable directions (those that cause injury). Most race boots today have similar systems. One observation about this armor system…. they do squeak a bit when you walk as the plastic flexes… this is normal and nearly every boot like this makes those noises, so don’t be concerned.
I really like the rounded shape of the heel assembly. The idea of a design like this is to promote a sliding motion during a fall. Boots that have a more traditional heel shape are more likely to hang up on something (on the ground) while sliding along and wrench the ankle. Makes perfect sense to me.
Overall, a really nice race boot with nearly every feature you could ask for… and excellent fit adjustment capabilities. :: Paul, 08-30-16
Vented and non-vented: You’ll notice in the drop down menu that there are vented and non-vented choices. The vented boots use perforated upper materials to allow for more air flow through the boot. Those in warmer climates will like that! We’ve taken some good close-up pictures so take a look by clicking the “View Larger Images” link above.
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