Shimano SM-BB91 Road Press Fit Bottom Bracket

Bottom Brackets up! The Shimano SM-BB91 Road Press Fit Bottom Bracket is a top of the range complete press-fit bottom bracket assembly kit for Shimano HollowTech II and two piece road cranks. It comes with an inner cover for 86.5mm BB shells.

Key Features:

• The cups are made from a fibre reinforced polymer material which reduces the risk of frame noise or sustaining any damage to your frame while running.
• This set includes left and right hand cups and inner cover.
• Sealed cups keep out dirt and water maintaining a long lasting, smooth running, maintenance free BB which is ideal for those not wishing to get their hands dirty through maintenance.
• For use with a BB shell width of 86.5mm on road bikes.
• Designed for a 41 mm cup diameter.
• A press-fit installation system allows for hassle free easy installation.
• You may wish to contact the bicycle brand (frame brand) manufacturer if you have a question in regards to BB specifications and assembly conditions.