Other

- AL6061-T6 alloy quick-release seatpost clamp with CNC machined cut-outs - Stainless steel bushing ensures smooth lever action - Rounded edges and floating bolt/ovalized hole design protects carbon frames and seatposts - 29.8mm for 27.2mm seatpost and chromoly frame - 31.8mm for 27.2mm seatpost and aluminum frame - 34.9mm for 30.9mm seatpost and aluminum frame, or 31.6mm seatpost and carbon frame - 16mm height

Origin-8's Down Tube Shifter Adapter is perfect for mounting down tube style shift levers on a bicycle that doesn't have provisions on the frame for them. It's made of light and durable machined aluminum with an anodized finish and fits frames with 1 1/8- to 1 1/4-inch diameter down tubes. Mounting hardware and shims are included.