After a shim so I can use my U.S.E Seatpost on my Specialized frame. A silver shim would be best but black would be fine.
My post is 25 and my frame is 26.4.
Cheers Matt
Shims are available in Aluminium or Thermo Plastic, despite the latter being a lighter solution its material characteristics limit the thickness of the ID - OD measurements. Aluminium is used to achie