Wheels Manufacturing BB30 Shim for Hollowtech II CranksWheels Manufacturing BB30 Shims use Sram/Truvativ or Shimano Hollowtech-II cranks in your BB30 frame. Shims are based on industry standard BB30 bottom bracket shells. Easy to install and machined for exact fit. Shims press fit directly into BB30 bearings. You will need the 6806 bearings already installed into the BB30 shell to start this conversion. Removal is the opposite of installation. You may need to gently tap them out from the opposite side.836572005910
