Shimano BB-R9100 Threaded Bottom Bracket Comfortmax 5" (64mm) using a unique

5" (64mm) using a unique flexible outer wing which adjusts under pressure

so go for it

Developed with the world's top downhillers and pro peloton teams

This weight reduction is accomplished while maintaining the strength and durability expected of a Thomson seatpost

Shimano BB-R9100 Threaded Bottom Bracket Comfortmax 5" (64mm) using a uniqueWith an advanced seal construction for smoother rotation and small ball bearings to minimize weight, the SHIMANO DURA ACE bottom bracket is offered in both pressfit and threaded options. Specifications Bottom bracket with small ball bearings for lightweight Advanced seal construction for smoother rotation MODEL NO: BB R9100 HOLLOWTECH II BB Type: Threaded bottom bracket type Threaded BB Shell Width: 68mm, 70 mm Mfr Claimed Weight 65g