Ritchey: The Superlogic 1-Bolt Seatpost is one of the lightest, toughest seatpost designs in the world. A patented SideBinder clamp design uses a single 5mm bolt for quick, secure adjustment, while the low-profile head delivers optimal saddle clearance and sleek lines. The Superlogic 1-Bolt Seatpost features a precision forged alloy clamp assembly for strength, and a wide saddle clamp reduces stress on lightweight saddle rails. Interchangeable clamps provide compatibility for all popular rail sizes. FEATURES1-BOLT CLAMPA simple and elegant design that offers near infinite axial adjustment with just one bolt security. TECH SPECSMaterial lightweight carbon fiberDiameter 27.2, 30.9, 31.6mmTotal length 300, 350, 400mm (including 100mm of minimum insert)Offset 25mmSaddle clamp 7x7mm saddle rail clamp included (interchangeable clamps available for carbon rail saddles)Saddle clamp torque 12Nm (max)Seat collar torque 6Nm (max) / 7Nm (max) for Ritchey steel framesWeight 148g (27.2x350mm)Colour matte UD carbon finish