ALPINESTARS SMX-6 v2 Vented Boots - Black/Yellow - US 3.5 / EU 36 2223017-1550-36 Nucleon Flex Pro Ci Chest Protector Insert 100% Polypropylene

100% Polypropylene

the modern motorcycle engine control systems cannot be optimized by piggyback systems

(15 HP in the middle and 28HP on top) This tune also removes any computer error codes the bike will have when installing a competition exhaust system

Strategically positioned aramid fiber reinforcements

ALPINESTARS SMX-6 v2 Vented Boots - Black/Yellow - US 3.5 / EU 36 2223017-1550-36 Nucleon Flex Pro Ci Chest Protector Insert 100% PolypropyleneBoot 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