The Alpinestars SMX Plus motorcycle boots combine lightweight microfiber construction with advanced protection and flexibility for high-performance street and track riding. This black, white, and red fluorescent model is sized US 9.5 / EU 44 and features Alpinestars’ Multi-Link Control system to help limit hyper-torsion, hyper-extension, and hyper-flexion while supporting ankle articulation. The contoured high-modulus shin plate, reinforced ankle area, and impact-resistant construction provide dependable coverage during demanding rides.
Flexible accordion microfiber zones at the front, rear, and Achilles area promote natural forward and backward movement without restricting rider comfort. The outer stretch accordion panel supports a close, secure fit while making the boots easier to put on and remove. Replaceable dual-density TPU toe sliders, a replaceable heel slider, and an external side heel slider help protect key impact areas and encourage controlled sliding during an accident. The durable rubber sole delivers consistent grip and improved connection with the motorcycle controls.
Fit is secured with an inner instep speed-lacing closure, Alpinestars Lace-Lock System, micro-adjustable ratchet top closure, and a lateral zipper with hook-and-loop retention. The advanced synthetic forefoot lining uses open-cell foam for shock absorption, while breathable ankle and leg areas improve comfort during extended wear. An anatomical, replaceable EVA footbed provides arch support and enhanced forefoot pedal feel. Manufactured by Alpinestars and supplied under vendor part number 2221019-1231-44, these SMX Plus boots fit riders seeking a secure, protective motorcycle boot for street and performance applications.
Features:
- Advanced microfiber upper provides lightweight protection, flexibility, and abrasion resistance
- Alpinestars Multi-Link Control system supports ankle articulation and helps limit hyper-torsion, hyper-extension, and hyper-flexion
- Flexible accordion zones at the front, rear, and Achilles area promote natural movement
- Replaceable dual-density TPU toe slider offers protective coverage around the outer toe
- Replaceable heel slider and external side heel slider help absorb and dissipate impact
- Contoured high-modulus shin plate improves impact and abrasion resistance
- Inner instep speed-lacing closure and Alpinestars Lace-Lock System provide a precise, secure fit
- Micro-adjustable ratchet top closure stows the tab end for a clean finish
- Breathable lining and open-cell foam forefoot lining improve comfort and shock absorption
- Replaceable anatomical EVA footbed provides arch support and enhanced pedal feel
- Durable textured rubber sole delivers consistent grip
- Brand: Alpinestars
- Model: SMX Plus
- Size: US 9.5 / EU 44
- Color: Black/White/Red Fluorescent
- Manufacturer and vendor part number: 2221019-1231-44