The ALPINESTARS SMX Plus V2 Track Riding Boots feature an advanced microfiber upper that delivers lightweight, high‑performance protection while maintaining exceptional flexibility. The front flex area is constructed with soft microfiber to enhance abrasion resistance and allow natural forward and backward movement, while a flexible accordion microfiber section at the Achilles improves natural motion. An accordion panel on the outside entry/exit provides a close fit and ease of entry and removal. The boots incorporate Alpinestars’ evolved Multi‑Link Control system, which offers external protection and support for ankle articulation, limiting hyper‑torsion, hyper‑extension, and hyper‑flexion while providing Achilles and ankle impact protection. Protective features include a dual‑density Thermoplastic Polyurethane (TPU) replaceable toe slider with a screw‑in assembly, replaceable heel slider and external side heel slider designed to dissipate shock and promote sliding during an accident. Large front and rear asymmetrical accordion zones maximize flexibility for comfort and safety. Closure is achieved with a micro‑adjustable ratchet top closure, inner instep speed lacing, a unique lateral zipper, and the Alpinestars Lace‑Lock System made from advanced polymer resin for a quick, precise fit; a hook‑and‑loop tap locks the zip pull close.
The interior is engineered for comfort and performance: an advanced synthetic forefoot lining laminated with open‑cell foam provides shock absorption, while a highly breathable lining in the ankle and leg areas enhances ventilation. The anatomical, replaceable countered EVA footbed supplies arch support and a forefoot pedal feel. The durable sole features evenly textured rubber for