ALPINESTARS SMX-1 R v2 Boots - Black/Red - US 11.5 / EU 46 2224521-13-46 Heavy Duty Inner Tube max rpm and top temperature

max rpm and top temperature Additional features include target speed timer

Ergonomic stretch insert between palm and thumb offers improved range of hand movement and greater sensitivity

Fitment: Yamaha YZF-R3 2017-2019

Protector cells are bridged together

Available for 22

ALPINESTARS SMX-1 R v2 Boots - Black/Red - US 11.5 / EU 46 2224521-13-46 Heavy Duty Inner Tube max rpm and top temperatureA class leading, low cut performance riding boot, the SM 1 R v2 Vented Riding Shoe incorporates a host of technical innovations for improved levels of comfort, fit and durability. Constructed from a lightweight and abrasion resistant microfiber upper with extensive perforations for maximum airflow and breathability, the shoe is also equipped with strategically positioned TPU protectors for abrasion resistance in a key area. The SMX 1 R v2 Vented