Wheels Manufacturing BB30 to 24 mm crank spindle shims to run HollowTech II cranks on BB30 | £55.99 | Components | Gears - Bottom Brackets | Elmy Cycles Ipswich Suffolk Bike Shop
BB30.24 adapter
ZTTO BB30sh BB30 24 Adapter Bicycle Press Fit Bottom Brackets Axle For MTB Road bike Parts Prowheel 24mm Crankset chainset - AliExpress