Problem Solvers Seat Post Shims Stock Item:Problem Solvers Seatpost Shim 30.9mm To 31.6mm Fast-rolling center tread for speed

Fast-rolling center tread for speed on straights

75" x 1" x 0

add water through the top holes and make at least 10 full revolutions

Mounting is simple and can mount onto most bike by using a direct top tube braze-ons on compatible bikes or using a aftermarket FPS kit

Problem Solvers Seat Post Shims Stock Item:Problem Solvers Seatpost Shim 30.9mm To 31.6mm Fast-rolling center tread for speedPROBLEM SOLVERS SEAT POST SHIMS Switching frames doesn't mean you have to switch posts! Use your old posts without worry with our wide variety of seatpost shims. FEATURES 100mm long 3mm lip Alloy Problem Solvers seatpost shims are not intended for use with carbon seatposts