Problem Solvers 0.7mm Shim, 30.9mm Seatpost to 31.6mm brake shoe and durability you can rely

and durability you can rely on

providing maximum protection for high-risk areas

the X3 rear derailleur provides great shifting performance

Drivetrain is silent in all gear positions with decreased rear derailleur and chain tension in low gear

long life and precise shifting

Problem Solvers 0.7mm Shim, 30.9mm Seatpost to 31.6mm brake shoe and durability you can relySwitching frames doesnt mean you have to switch posts! Use your old posts without worry with the Problem Solvers Seatpost Shims. Length is 97mm with a 3mm lip totaling 100mm Due to the ultra thin spec of this shim and varied manufacturing tolerances of frames and seatposts, we can't guarantee compatibility with all brands on the market Be gentle and use grease