precision sealed bearings and 7075 hardware spinning on a 14mm hollow female axle with extralong bolts for durability

or just hitting your ankles on anything

while their new anti-bacterial neoprene keeps your pads fresh and ready day after day

Featuring the same design and technical specifications as the adult frame the Sierra 18 has everything you'd expect from a modern frame

Box Two Quick Release Race Seat Clamp bc-mounts-1 precision sealed bearings and 7075Box Two Quick Release Seat Clamps are cold forged and CNC machined from 6061 T6 aluminium alloy. The head of the quick release lever and the face of the clamp are given a proprietary low friction surface treatment that ensures smooth lever action for the life of the clamp, without the need for a bushing. Meets or exceeds ENM standards. ###section### Product Specs SIZE: 31. 8mm WEIGHT: 0. 06lbs (27g)