Shimano Dura-Ace BB92-41B Press Fit Bottom Bracket
What Makes the Shimano Dura-Ace BB92-41B the Right Press-Fit BB?
The BB92-41B is Shimano's Dura-Ace press-fit bottom bracket for BB86 frames, designed to mate any Dura-Ace or compatible Hollowtech II crankset to a 41mm inner diameter press-fit shell. The composite cups press in to a 41mm outer diameter with a 1.75mm positive-stop lip, providing a consistent seating depth for correct bearing alignment. Two sealed steel cartridge bearings handle drivetrain loads efficiently, and the included inner sleeve with o-ring protects the frame interior from moisture infiltration, a common issue with press-fit installations in externally-routed frames.
Black plastic dust shields snap onto the inner race of each bearing to exclude debris and extend bearing service life between replacements. The Hollowtech II interface accommodates any Shimano two-piece crankset with a 24mm spindle, including Dura-Ace, Ultegra, and 105 road groupsets. At 54 grams the assembly adds minimal mass compared to threaded alternatives, which is the right trade-off for a weight-focused road or triathlon build on a BB86-spec frame. For riders moving from a threaded BB frame to a press-fit platform, or replacing a worn BB92, this is the OEM-spec drop-in solution.
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Shimano Dura-Ace BB92-41B Press Fit Bottom Bracket
Shimano Dura-Ace BB92-41B Press Fit Bottom Bracket
What Makes the Shimano Dura-Ace BB92-41B the Right Press-Fit BB?
The BB92-41B is Shimano's Dura-Ace press-fit bottom bracket for BB86 frames, designed to mate any Dura-Ace or compatible Hollowtech II crankset to a 41mm inner diameter press-fit shell. The composite cups press in to a 41mm outer diameter with a 1.75mm positive-stop lip, providing a consistent seating depth for correct bearing alignment. Two sealed steel cartridge bearings handle drivetrain loads efficiently, and the included inner sleeve with o-ring protects the frame interior from moisture infiltration, a common issue with press-fit installations in externally-routed frames.
Black plastic dust shields snap onto the inner race of each bearing to exclude debris and extend bearing service life between replacements. The Hollowtech II interface accommodates any Shimano two-piece crankset with a 24mm spindle, including Dura-Ace, Ultegra, and 105 road groupsets. At 54 grams the assembly adds minimal mass compared to threaded alternatives, which is the right trade-off for a weight-focused road or triathlon build on a BB86-spec frame. For riders moving from a threaded BB frame to a press-fit platform, or replacing a worn BB92, this is the OEM-spec drop-in solution.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
What Makes the Shimano Dura-Ace BB92-41B the Right Press-Fit BB?
The BB92-41B is Shimano's Dura-Ace press-fit bottom bracket for BB86 frames, designed to mate any Dura-Ace or compatible Hollowtech II crankset to a 41mm inner diameter press-fit shell. The composite cups press in to a 41mm outer diameter with a 1.75mm positive-stop lip, providing a consistent seating depth for correct bearing alignment. Two sealed steel cartridge bearings handle drivetrain loads efficiently, and the included inner sleeve with o-ring protects the frame interior from moisture infiltration, a common issue with press-fit installations in externally-routed frames.
Black plastic dust shields snap onto the inner race of each bearing to exclude debris and extend bearing service life between replacements. The Hollowtech II interface accommodates any Shimano two-piece crankset with a 24mm spindle, including Dura-Ace, Ultegra, and 105 road groupsets. At 54 grams the assembly adds minimal mass compared to threaded alternatives, which is the right trade-off for a weight-focused road or triathlon build on a BB86-spec frame. For riders moving from a threaded BB frame to a press-fit platform, or replacing a worn BB92, this is the OEM-spec drop-in solution.
