Title Bolt-On Seatpost Clamp No-Nonsense Security A seatpost clamp is one of those parts that should disappear into your build. The Bolt-On Seatpost Clamp does exactly that. CNC-machined from 6061-T6 aluminum, it holds your post firmly without adding unnecessary weight to the equation. Six diameter options mean it covers everything from XC builds to full-send freeride and DH rigs, and the machined finish looks sharp doing it. Features6061-T6 aluminum construction strong, lightweight alloy keeps the clamp from becoming dead weight on your build CNC machined precise tolerances for a consistent, reliable hold on your seatpost Six diameter options 28. 6mm, 30. 0mm, 31. 8mm, 34. 9mm, 36. 4mm, and 39. 4mm to fit a wide range of frames Rated for DH, freeride, dirt jump, slopestyle, skatepark, street, and XC no matter what you ride, there's a fit here | Title | Bolt-On Seatpost Clamp 31. 8Mm Chrome