ALPINESTARS SMX-6 v2 Vented Boots - Black - US 6.5 / EU 40 2223017-1102-40 Yamaha YZF Airbox Kit Constructed from a blend of

Constructed from a blend of goat leather and synthetic leather for light weight and performance

Snap connection system allows integration of Nucleon Race Back Protector for the ultimate in protection (for use without Tech-Air® system)

Specifically designed for up-and-coming youth riders with smaller feet Designed and developed for optimized comfort and fit for junior riders

Machined mid pipe to head pipe joint for a better

ALPINESTARS SMX-6 v2 Vented Boots - Black - US 6.5 / EU 40 2223017-1102-40 Yamaha YZF Airbox Kit Constructed from a blend ofBoot upper incorporates an innovative front and rear bellows and rear calf zone for superior levels of flexibility Boot upper is constructed from microfiber for durability and abrasion resistance Ergonomic forefoot streamlining enables greater control of the bike's controls and provides a superior, wide ranging foot profile for excellent fit and comfort Thermoplastic Polyurethane (TPU) lateral ankle brace provides a biomechanical support between the