Updates have made the S-MX R an even more accomplished road and track performer.

• Greater flexibility and comfort, combined with its lightweight and ergonomic shaping using hi-tech micro-fiber, give superb riding control and safety performance.
  
• Contoured shin plate protection, with high modulus TPU injection has been re-profiled to improve forward flex performance whilst providing highly effective impact and abrasion protection.
  
• Air scoops are upgraded and give effective ventilation.
  
• Ankle and calf protection is dual molded to improve material hardness and contoured to allow the Achilles flex bellows to wrap around the ankle.
  
• Additional calf support is given by a molded logo tab behind the gusset.
  
• Injection molded, support gasket has been added to control support and stiffness in the ankle area.
  
• Wide and ventilated injected TPU heel counter structure is combined with an internal shock absorbing padded insert and memory foam ankle guard.
  
• Inside lower heel grip, with a smooth inner profile, gives good feel and control.
  
• Asymmetrical ‘throat’ design bellows area has been profiled to flow over the medial side forefoot to aid flex and promote natural movement.
  
• Shifter pad and forefoot protection has been enlarged and uniquely styled with over-injected TPU inserts.
  
• Side entry zipper and expansion panel allow easy entry and exit with wide opening aperture and improved general fit.
  
• Micro adjustable, replaceable, ratchet closure, with recessed locking buckle and hidden strap around the calf, provides additional accuracy and security, in addition to the Velcro© flap closure over the entry/exit zip.
  
• Synthetic inner lining in open cell foam for comfort and long-lasting freshness.
  
• Highly breathable lining in the ankle and forefoot areas.
  
• Interchangeable, bi-injected, toe slider.
  
• A removable and replaceable contoured footbed, sculptured with Alpinestars exclusive PU foam, provides improved arch support and increased forefoot pedal feel.
  
• Exclusive rubber compound sole is highly durable and gives superb grip on the footpegs and a high level of pedal feel.
  
• Internal molded shank.
  
• A fully perforated version of the S-MX R provides higher levels of ventilation for hot climates (available in Black only).
  
• The S-MX R boot is CE certified.