SHIMANO BB-RS501 BSC crankset

For use with 68 mm frames and 24 mm crank axles, the threaded bottom bracket SHIMANO Tiagra BB-RS501 BSA Hollowtech II bottom bracket features even smoother, more sealed bearings than the previous generation.

The size of the bearings has also been revised to make them lighter.

A - Diameter (mm)	B - Width (mm)	Assembly	Standard
34,8	68	screw-on	BSC / BSA
34,8	73	screw-in	BSC / BSA
34,8	83	screw-in	BSC / BSA
34,8	100	screw-in	BSC / BSA
27	95,5	insert	BB 96 (Trek)
41	92	insert	PF 92
42	68	insert	BB 30
42	73	insert	BB 30
46	68	insert	PF 30
46	73	insert	PF 30

Ref: 7970331000998