The Problem Solvers Seatpost Shim is what you need when your seatpost is a little too small-diameter to fit tightly into your frame. It's made of light, durable aluminum and has a lip on the top so it won't slide down inside the frame during installation.
|Option||Barcode||Manufacturer's Part Number||Store SKU|
|3.7mm shim, 27.2 seatpost to 30.9 frame||00708752012851||ST0237||275066636|
|1.4mm shim, 25.4 seatpost to 26.8 frame||00708752024366||ST0514||592225736|