Shimano - XTR SM-BB91-42A Bottom Bracket Pressfit
Complete press-fit bottom bracket assembly for Shimano HollowTech II MTB cranks, for use with Specialized frames with a 84.5mm bottom bracket shell width.
Cups are made from fibre reinforced polymer material which reduces the risk of frame noise and damage
SPECIFICATIONS
CRANK INTERFACE Press-Fit
SHELL WIDTH 84.5mm
CUP DIAMETER 42mm
WEIGHT 54.0g
SERIES BB91
CRANK INTERFACE Press-Fit