CeramicSpeed Coated BSA Ceramic Bottom Bracket - BSA-73-30 - red

Step up to a new and transformed riding experience.

For BSA frames with 73 mm case width and cranks with 30 mm axle e.g. Rotor 3D+ and 3DF.

Threaded MTB bottom brackets are mostly English-threaded, aka BSA, and feature the same threading and the same 34 mm inner diameter, but a wider 73 mm shell. This kit pairs 30 mm spindle cranks to the BSA MTB standard.

Bearings pressed into threaded cups, which are then threaded into the frame are the main components of this kit. Super smooth, super round CeramicSpeed balls are rotating in hardened-steel races in both. In CeramicSpeed coated bearings the steel races are coated with an extremely thin (2-3 microns) protective layer, which is 75% harder than hardened steel. This metallic coating laid onto the races, making it even smoother and harder, resulting in longer life and lower drag.

CeramicSpeed offers 4 years warranty for standard and 6 years for coated products - please register within 30 days after purchase at ceramicspeed.com.
Case width: 73mm
Material: bracket cups: aluminum, bearings: stainless steel coated, ceramic balls