ALPINESTARS SMX1-R V2 Boots - Black - US 6.5 / EU 40 2224021-1100-40 Stack Long-Sleeve Knit T-Shirt Instep and Achilles’ accordion flex

Instep and Achilles’ accordion flex zones are constructed from lightweight microfiber for optimized levels of durability

Complete valve shim kits make it easier to maintain your valve train

savings)DB at Idle 91 DB at 5000rpm 109 DBFitment: Yamaha R1 R1M R1S 2015-2023 (Note 2020 + R1 riders can call in the orders to have front 02 sensors added for an extra charge if your tuning cannot remove the 02 sensors)

Sport styled

Kits include one 12-fluid ounce (EU: 354

ALPINESTARS SMX1-R V2 Boots - Black - US 6.5 / EU 40 2224021-1100-40 Stack Long-Sleeve Knit T-Shirt Instep and Achilles’ accordion flexThe 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