Alpinestars S-M10 Era Motorcycle HelmetsAlpinestars S M10 Era Motorcycle Helmets The Alpinestars Supertech S M10 represents the pinnacle of motocross technology. Engineered by the world class Helmet Development team, the S M10 was created to be the most advanced, protective, and performance enhancing helmet for elite riders globally. Performance and Comfort Lightweight Engineering: Designed to achieve the lightest weight possible without compromising structural integrity or safety. Superior

Perfect for SHIMANO ALFINE equipped bicycles

Performance and Capacity Variations

Total Length (with hook & ring): 20

Innerdrive mechanism features oversized 42mm steel ratchets positioned inboard and over the bearings

) 104 mm Drivetrain Compatibility Chain Pitch 1/2" (12

Breathability: Cotton-rich construction ensures natural breathability and comfort

Caliper: 74mm

Muc-Off Chainstay & Seatstay Kit Complete 20-Piece Bicycle Frame Protector

making the helmet adaptable to changing riding conditions while maintaining its distinctive appearance

setting a new benchmark for lightweight performance on the trail and road

Featuring Pinlock compatibility to help reduce fogging in varying weather conditions

full-flange* Black push-in plugs included​​