ALPINESTARS SMX-6 v2 Boots - Black/Red - US 7.5 / EU 41 22230171341 Wheel Stud/Nut Kit New performance double pivot motion

New performance double pivot motion control system features: a medial and lateral double pivot system for improved levels of flexibility and precision control

PrimaLoft® Gold Insulation Aerogel inserts on fingers to provide high insulation against wind-chill

Rubber compound cup sole is molded to the upper to offer stability

complete with new race algorithm which is available as a download Innovative MATRYX® structural panels on the abdomen and back hump provide parametric performance for ventilation and superior mechanical resistance to tearing and abrasion while also being extremely thin and lightweight

Buckles are injected with high-impact-resistant techno polymer

ALPINESTARS SMX-6 v2 Boots - Black/Red - US 7.5 / EU 41 22230171341 Wheel Stud/Nut Kit New performance double pivot motionBoot 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