Proto-Full-Knuckle SCS V2 Oversized 4" (Gold) Playlife The Valo V13 or M12

The Valo V13 or M12 Replacement liners

An old school style and shape that blend's Pro-tec's modern helmet features

Maxxum Edge 90 is a true hybrid skate for that effectively blends speed and durability with extra lateral support for advanced skaters

Wheel Size

Proto-Full-Knuckle SCS V2 Oversized 4" (Gold) Playlife The Valo V13 or M12The PROTO Full Knuckle SCS is the original and first Standard Compression System. It fundamentally changed the way a freestyle scooter was built and effectively revolutionized the freestyle scooter after market parts industry. The Full Knuckle SCS is still the strongest and most universally compatible SCS ever created. The Full Knuckle SCS is built to perform and last and carries a lifetime warranty on cracking. Made of High Grade 6061 T6 Aluminum.