Complete XTR level press-fit bottom bracket assembly for Shimano Hollow Tech II MTB cranks Cups are made from fibre reinforced polymer material which reduces the risk of frame noise & damage Set
Includes:: left & right hand cups, 2.5 mm spacer, inner cover, & inner O-rings Sealed cups keep out dirt & water Maintenance free Compatible with 89.5 mm (with 2.5 mm spacer) & 92 mm shells 42 mm cup diameter Easy press-fit installation