Problem Solvers Seat Post Shims Stock Item:Problem Solvers Seatpost Shim 30.9mm To 31.6mm RD-M8100 GS REAR DERAILLEUR XT

RD-M8100 GS REAR DERAILLEUR XT 1 x 12-SPEED 10-45 Cassette only

making it ideal to support working muscles during extended exercise

and it means you’ll always have traction on rails or ramps

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

and finishing strips

Problem Solvers Seat Post Shims Stock Item:Problem Solvers Seatpost Shim 30.9mm To 31.6mm RD-M8100 GS REAR DERAILLEUR XTPROBLEM 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