ALPINESTARS SMX Air Jacket - Gray/Black/Orange - 4XL 3306523-914-4XL Fatty Freeway Bar Internal toe box reinforcement layered

Internal toe box reinforcement layered under the shoe microfiber outer layer

Stunted midsole and rigid insole with integrated steel shank for excellent feel and comfort

Special pinion shaft threads and extended jackshaft bolt allow for a wider range of applications

Lowered height of 3-1/2"

has a thread for the lambda sensor for those planning to tune the engine electronics

ALPINESTARS SMX Air Jacket - Gray/Black/Orange - 4XL 3306523-914-4XL Fatty Freeway Bar Internal toe box reinforcement layeredA motocross inspired textile jacket, the SMX Air Jacket features a main chassis constructed from tech mesh on the riders abdomen, back, and inner arms, paired with 450D polyfabric reinforcement on the outer arms and shoulders The SMX Air also incorporates perforated 450D polyfabric on the upper chest for excellent levels of airflow during the warm, summer riding months Extended polyamide stretch material has been incorporated on the riders back