Box One Fixed Clamp for BMX or Mountain or Road Bikes formally the Helix
This Box One Fixed Clamp is a single bolt BMX seatpost clamp.
Cold forged and CNC machined from 6061-T6 aluminum alloy, Box One Fixed Seat Clamps are tough, lightweight and exceptionally good looking. Featuring titanium hardware and laser-etched graphics, Box One Fixed Seat Clamps are available in anodized black, blue, gold, red, gun metal and silver.
We also have the Box Two Clamp and the Box Quick Release Type called the Box Two or Box Three.
Email us with any questions you have.