Wheels Manufacturing BB30 to 24mm Crank Spindle Shims, Shimano

These shims press into your existing BB30 bearings in your BB30 frame, to use a Shimano Hollowtech II Chainset

For Road: Dura Ace, Ultegra, 105, Tiagra, Sora

For MTB: XTR, XT, SLX, Deore

From the Manufacturer:

Run 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 (6806)
• 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