High-quality Shimano Hollowtech2 bottom bracket for BSA-threaded frames. Compatible with Shimano cranks as well as other cranks with a uniform 24 mm axle. The frame’s bottom bracket shell width is 68 or 73 mm. Also suitable for fat bikes and other bikes using a wider bottom bracket, but in that case, the plastic spacer must be taken from the old bottom bracket.

• Thread type BSA, British threads with a pitch of 1.370″ x 24 TPI (threads per inch)
• Axle size 24 mm, e.g., Shimano Hollowtech2, FSA Megaexo, Raceface
• Weight 82 g
• Includes two adapter washers for adjusting chainline or fitting the bearing to a 68 mm wide bottom bracket shell
• Outer diameter 41 mm, 16 notches for tool (a suitable tool is, for example, Park Tool BBT-59.2)

Picture shows an example of a supported axle