This Alpinestars SMX-S Boots review examines the standard microfibre road/race model with a shin plate, lateral ankle support and replaceable toe slider. A side zip, broad upper closure and removable footbed give it several practical fitting and maintenance points.
This is a specification-based buying guide, not a hands-on road test. We may earn a commission from purchases through our links, at no extra cost to you.
Side entry and no-screw slider replacement
The inner-side opening combines an elastic-mounted zip with a wide hook-and-loop closure. Open both fully for entry, then check that the upper closes evenly around your ankle and calf. The textile lining includes a suede heel area, but the size still needs to hold your heel securely when you reach for the controls.
The shin plate, lateral support and dual-density ankle components give the upper its structure. Assess their alignment with your knee bent, paying attention to any pressure across the instep. The toe slider uses a no-screw replacement arrangement, so identify the correct SMX-S part and instructions before servicing it. A TPU shift pad and removable anatomic footbed are further contact points to try on your motorcycle. This standard listing does not specify the membrane fitted to the separately named Waterproof version; establish wet-weather suitability before choosing between them.
Protection and construction
The specification lists protection at the toe sliders, shin and ankle. Check that these areas sit correctly when you adopt your riding position.
See our motorcycle boot reviews for more buying guides.
Related reading: Alpinestars Stella SMX Plus V2 Boots Review.