Alpinestars 2026 Supertech SM5 Solid Black Motocross Helmet Adult Helmet Size:S 55-56cm Note that ratchet buckle and

Note that ratchet buckle and side waist adjusters (on most models) will cinch up an additional 2“ of waist size to fine tune the fit

For riders who demand a bit more than average from their bikes

trail and scooter bikes

Material - Rubber

Washer 2 O'Ring 1 Caliper Seal 4 Boot 3 Bolt Kit 1

Alpinestars 2026 Supertech SM5 Solid Black Motocross Helmet Adult Helmet Size:S 55-56cm Note that ratchet buckle andThe SM5 helmet has been designed to provide MX riders with a helmet that is safe and purposefully designed to deliver optimal protection and comfort. The lightweight SM5 helmet features a thermo injected shell incorporating a special polymer blend enhanced by varying degrees of thickness that is engineered to deliver the optimal combination of impact protection and light weight, while the five density EPS liner ensures the correct density in the