CeramicSpeed: BSA30 Bottom Bracket

BSA comes from British Standard Cycle, aka English threading.

English threading on road bikes means a 68mm wide, 34mm inside diameter shell with reverse threading on the drive side. It’s the most common threaded standard employed today.

This kit allows you to fit 30mm thru-axle cranks, like those from Rotor, to fit in the tight space of this 34mm spindle.

Brand: CeramicSpeed