Shimano BB91-42A MTB Press Fit Bottom Bracket
- Complete XTR level press-fit bottom bracket assembly for Shimano hollowtech ii MTB cranks
- cups are made from fibre reinforced polymer material which reduces the risk of frame noise and damage
- set includes left and right hand cups, 2.5 mm spacer, inner cover, and inner o-rings
- sealed cups keep out dirt and water
- maintenance free
- compatible with 89.5 mm (with 2.5 mm spacer) and 92 mm shells
- 42 mm cup diameter
- easy press-fit installation
Product Information
Product Information
Shipping & Returns
Shipping & Returns

Shimano BB91-42A MTB Press Fit Bottom Bracket
Shimano BB91-42A MTB Press Fit Bottom Bracket
- Complete XTR level press-fit bottom bracket assembly for Shimano hollowtech ii MTB cranks
- cups are made from fibre reinforced polymer material which reduces the risk of frame noise and damage
- set includes left and right hand cups, 2.5 mm spacer, inner cover, and inner o-rings
- sealed cups keep out dirt and water
- maintenance free
- compatible with 89.5 mm (with 2.5 mm spacer) and 92 mm shells
- 42 mm cup diameter
- easy press-fit installation
Original: $50.33
-65%$50.33
$17.62Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
- Complete XTR level press-fit bottom bracket assembly for Shimano hollowtech ii MTB cranks
- cups are made from fibre reinforced polymer material which reduces the risk of frame noise and damage
- set includes left and right hand cups, 2.5 mm spacer, inner cover, and inner o-rings
- sealed cups keep out dirt and water
- maintenance free
- compatible with 89.5 mm (with 2.5 mm spacer) and 92 mm shells
- 42 mm cup diameter
- easy press-fit installation











