Shimano SM-BB92-41B Dura Ace Press-Fit Bottom Bracket for road bikes

Deigned to press right into road bikes with a BB92 bottom bracket shell using Shimano's HollowTech and HollowTech II cranksets. It comes with two steel cartridge bearings pressed into composite cups. The cups increase the outside diameter of the assembly to 41mm to match the I.D. of the frames' bottom bracket shell. Being part of the new press-fit standard there is also a 1.75mm thick outer lip that provides a positive stop for the cups when you press them into place. Shimano includes their standard plastic O-ringed inner sleeve to protect against water damage should any find its' way inside your frame. It also uses black plastic dust shields that snap into the inner race of each bearing.

• Maintenance free
• Easy press-fit installation
• Sealed cups keep out dirt and water
• Made from fibre reinforced Polymer material to reduce risk of damage and frame noise
• Set includes left and right hand cups, inner cover, and inner O-rings
• Compatible with 86.5 mm shells
• Material: Composite body
• Stainless steel bearings
• Cup Diameter: 41 mm
• Weight: 76 g
• Suits: Hollow Tech crank set, Hollow Tech II
• Use: Road