The latest and greatest in Shimano’s Dura Ace level componentry and bottom brackets, the Shimano SM-BB92-41B Press Fit Bottom Bracket has been redesigned for the better.
Shaving 17 grams over the BB91-41B, the new cups got smaller and lighter. Shimano also opted to go from 15 larger bearings to 19 smaller bearings, which reduced rotational friction and allowed for an improved seal design. This BB fits road frames with bottom bracket shell widths of 86.5mm and a 41mm internal diameter. Made for Shimano 24mm spindle cranks.
- Actual weight: 55 grams
- BB92 is updated BB91
- Dura Ace level BB
- For a BB shell width of 86.5mm
- Press-Fit BB shells only (no internal threads)
- 41mm BB cup diameter