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Alpinestars SMX Plus Boot Black

Item #: 4000021

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Sugg. Retail: $369.95

The S-MX Plus Boot perfectly blends sleek sports styling with advanced protection features developed in Alpinestars performance footwear department. The durable and light microfiber upper is reinforced with a rugged polymer protector while the exclusive Multi Link Control (MLC) system prevents ankle torsion while offering freedom of movement.


  • Race-proven, contoured polymer shin protector designed for an ergonomic and secure fit to give superior impact and abrasion resistance.
  • Medial-side contouring promotes greater contact with body of bike.
  • Anatomically optimized, asymmetric leather accordion zones for maximum flexibility and riding comfort.
  • Upper is constructed from lightweight and durable microfiber, while a contoured synthetic compound.
  • Sole features aqua-dynamic channels to promote greater water run-off.
  • Strategically positioned front vent for improved ventilation on long or short trips.
  • Instep area constructed made from aramidic fiber with speed lacing closure and elastic-mounted lateral zipper for precise and secure fit


  • Alpinestars exclusive Multi Link Control (MLC) also offers added impact protection to critical ankle.
  • Dual-density screw-in toe-slider constructed from ionized aluminum and polymer for optimized levels of durability, weight-saving and abrasion resistance. Slider is replaceable.
  • Vented wide heel counter is reinforced with shock-absorbing insert and molded ankle protectors.
  • Replaceable, high density TPU rear heel-plate slider combines with side insert slider to protect and reduce friction in event of a crash.
  • The S-MX Plus Boot is fully CE-certified
  • Ratchet buckle closure on calf features hidden security strap.
  • Advanced synthetic forefoot lining with advanced open cell' foam for improved shock absorption.
  • Breathable mesh inserts and perforated side panel improve airflow.
  • Alpinestars anatomical and replaceable footbed provides support arch support and improved forefoot feeling.

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