Shimano Dura-Ace BB92-41B Press Fit Bottom Bracket
Why Does Dura-Ace Need the Shimano BB92-41B Press Fit Bottom Bracket?
The Shimano SM-BB92-41B is the Dura-Ace press-fit bottom bracket for frames with 86.5mm BB86 or BB92 shell widths, pairing Dura-Ace-grade precision with the Hollowtech II outboard bearing system for maximum pedaling stiffness and rotation efficiency. The advanced seal construction delivers smoother rotation than standard road press-fit bottom brackets while keeping the overall weight to just 54 grams -- a meaningful achievement for a press-fit unit. The axle is steadily supported by wide-spaced outboard bearings, providing excellent lateral stiffness for efficient power transfer on every sprint, climb, or sustained effort.
Designed for 86.5mm press-fit shell widths (BB86/BB92 standard) used by many carbon road and aero frame designs where manufacturers chose press-fit for the ability to design wider chainstays without a threaded insert. Compatible with Shimano Dura-Ace R9100 and R9200 cranksets using the 24mm Hollowtech II axle standard, and broadly compatible with other Shimano road Hollowtech II cranksets on frames with this shell specification. Installation requires a press-fit bottom bracket tool such as the Park Tool BBP-1 or Wheels Manufacturing BB press. For riders running a press-fit frame with Dura-Ace cranks, the SM-BB92-41B is the correct OEM bottom bracket.
Shimano Dura-Ace BB92-41B Press Fit Bottom Bracket
Why Does Dura-Ace Need the Shimano BB92-41B Press Fit Bottom Bracket?
The Shimano SM-BB92-41B is the Dura-Ace press-fit bottom bracket for frames with 86.5mm BB86 or BB92 shell widths, pairing Dura-Ace-grade precision with the Hollowtech II outboard bearing system for maximum pedaling stiffness and rotation efficiency. The advanced seal construction delivers smoother rotation than standard road press-fit bottom brackets while keeping the overall weight to just 54 grams -- a meaningful achievement for a press-fit unit. The axle is steadily supported by wide-spaced outboard bearings, providing excellent lateral stiffness for efficient power transfer on every sprint, climb, or sustained effort.
Designed for 86.5mm press-fit shell widths (BB86/BB92 standard) used by many carbon road and aero frame designs where manufacturers chose press-fit for the ability to design wider chainstays without a threaded insert. Compatible with Shimano Dura-Ace R9100 and R9200 cranksets using the 24mm Hollowtech II axle standard, and broadly compatible with other Shimano road Hollowtech II cranksets on frames with this shell specification. Installation requires a press-fit bottom bracket tool such as the Park Tool BBP-1 or Wheels Manufacturing BB press. For riders running a press-fit frame with Dura-Ace cranks, the SM-BB92-41B is the correct OEM bottom bracket.
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Description
Why Does Dura-Ace Need the Shimano BB92-41B Press Fit Bottom Bracket?
The Shimano SM-BB92-41B is the Dura-Ace press-fit bottom bracket for frames with 86.5mm BB86 or BB92 shell widths, pairing Dura-Ace-grade precision with the Hollowtech II outboard bearing system for maximum pedaling stiffness and rotation efficiency. The advanced seal construction delivers smoother rotation than standard road press-fit bottom brackets while keeping the overall weight to just 54 grams -- a meaningful achievement for a press-fit unit. The axle is steadily supported by wide-spaced outboard bearings, providing excellent lateral stiffness for efficient power transfer on every sprint, climb, or sustained effort.
Designed for 86.5mm press-fit shell widths (BB86/BB92 standard) used by many carbon road and aero frame designs where manufacturers chose press-fit for the ability to design wider chainstays without a threaded insert. Compatible with Shimano Dura-Ace R9100 and R9200 cranksets using the 24mm Hollowtech II axle standard, and broadly compatible with other Shimano road Hollowtech II cranksets on frames with this shell specification. Installation requires a press-fit bottom bracket tool such as the Park Tool BBP-1 or Wheels Manufacturing BB press. For riders running a press-fit frame with Dura-Ace cranks, the SM-BB92-41B is the correct OEM bottom bracket.
