Wheels MFG Bottom Bracket Adapter for BB30
These adapters are available for 24mm spindle Shimano, or SRAM/Truvativ cranks. These adapters help eliminate the guess work by accommodating Shimano 24mm and SRAM/Truvativ 24/22mm cranks to virtually any BB30 bottom bracket bearings. Simply insert the adapters into the existing bearings then install your crankset as usual.
These are the perfect light weight solution to convert your BB30 frame to accept shimano cracks. I have a Stumpy EVO that I wanted to run 165mm cranks and these made it possible to install the XT cranks.