UCB BB30 to Hollotech II adaptor, this item fits perfectly into your pre installed BB30 bearings, to make your BB30 compatible frame, compatible with 24mm axle external BB style crankset.

Made from Delrin (POM) material, it's cnc detailed to give precise fit and function. Easily installed by hand, and needing no tools to remove, it's the perfect soluton for all your BB30 inter-changebility needs.

Now available in black, or our world exclusive White