ALPINESTARS SMX1-R V2 Boots - Black - US 12.5 / EU 48 2224021-1100-48 Replacement Soles and Inserts — Outsole Insert replacing the bulky stock muffler

replacing the bulky stock muffler In order to get that aggressive sound that you've been wanting

and will bring your air filter to like-new condition

Fitment: Yamaha R7 2021 +

Headers mount to the head with machined stainless spiggots and flanges made from 7075 T651 aluminum then hard anodized and spring mounted

Specially formulated ink stays on

ALPINESTARS SMX1-R V2 Boots - Black - US 12.5 / EU 48 2224021-1100-48 Replacement Soles and Inserts — Outsole Insert replacing the bulky stock mufflerThe 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