ALPINESTARS SMX1-R V2 Boots - Black - US 10.5 / EU 45 2224021-1100-45 RM-Z450 2018-2023 125% pressure volume and 135%

125% pressure volume and 135% scavenge volume over OEM stock TC88 oil pumps

Ergonomic stretch insert on palm and thumb

9 mm and two 10 mm sockets

or can be removed entirely

ALPINESTARS SMX1-R V2 Boots - Black - US 10.5 / EU 45 2224021-1100-45 RM-Z450 2018-2023 125% pressure volume and 135%The main upper material is microfiber Tongue and rear accordion made by lightweight padded material that offer superior comfort Airflow and ventilation are improved thanks to lateral Air Intake with metallic mesh New speed lace system derived from Alpinestars MotoGP technology for improved quick precise and secure closure Higher closure system with new adjustable hook and loop closure and debossed Alpinestars logo Foam backed double density ankles