Ideal for the road rider rebuilding or replacing a BB86 / PF41 bottom bracket on a bike with a 24 mm Shimano HOLLOWTECH II crankset.
The Shimano DURA-ACE SM-BB92-41B is a press-fit bottom bracket for road frames built around the 86.5 mm BB86 standard with a 41 mm shell I.D. If you're running a Shimano HOLLOWTECH II road crank, this is the clean, lightweight option that gives you the right fit without overcomplicating the build.
What stands out here is the focus on low weight and smooth running. Shimano uses small ball bearings to keep weight down, and the advanced seal construction is designed to help the bearings spin smoothly while keeping contamination out. For a customer choosing between budget and premium Shimano press-fit units, this sits at the lighter end while still being a practical everyday road choice.
It also makes sense if you want to stay with a standard press-fit cup system rather than moving to a heavier thread-together conversion bottom bracket. Installation needs the correct press-fit tools and a frame shell that is clean and in good condition, so it's best suited to riders who want a proper factory-style BB86 setup for a road race, endurance or performance bike.
Built for BB86 road frames
Designed for 86.5 mm press-fit shells with a 41 mm inner diameter, making it the right match for BB86 road frame standards.
HOLLOWTECH II compatibility
Suited to 24 mm Shimano HOLLOWTECH II road cranksets, so it fits neatly into Shimano-based road builds.
Lightweight DURA-ACE construction
At 54 g, it keeps rotating weight low and suits performance-focused road bikes.
Small ball bearing design
Uses small ball bearings to reduce weight while keeping the bottom bracket compact and efficient.
Advanced seal construction
The sealing is designed to support smoother rotation and help keep grit and moisture away from the bearings.
Factory-style press-fit solution
A simple, standard Shimano cup-style setup for riders who want the original-style BB86 fit rather than a conversion system.
Shimano service support
Supported by Shimano dealer documentation and dedicated install and removal tools for straightforward workshop servicing.
General
Dimensions & weight
Features
Compatibility
Technology
HOLLOWTECH II
We use HOLLOWTECH II to give you an efficient, stable pedalling platform. The integrated axle and wide bearing stance help deliver strong power transfer with low weight and smooth rotating performance.
Press-Fit BOTTOM Bracket
This press-fit design supports the axle with wide-set bearings to help you get efficient power transfer and a solid feel through the pedals.
Great for
Maybe not for
Fits 86.5 mm-wide, 41 mm I.D. press-fit shells and is intended for 24 mm Shimano HOLLOWTECH II cranksets. Installation uses Shimano TL-BB12 and removal uses TL-BB13. Shimano notes the cups should not be reused after removal.
vs Shimano SM-BB72-41B
The closest alternative inside Shimano’s own range. It fits the same 86.5 mm / 41 mm press-fit format, but Shimano lists it as heavier than the SM-BB92-41B.
vs Wheels Mfg BB86/92-BB for 24 mm Shimano cranks
A heavier aftermarket upgrade that uses machined aluminium cups with replaceable bearings. It is aimed at riders prioritising serviceability and creak reduction over minimum weight.
vs TOKEN Ninja BB841T-41
A thread-together BB86/92 option for 41 mm shells and 24 mm Shimano cranks, built to reduce creaking and increase stiffness in the frame-to-BB interface.
Check the frame standard first
The important match points are 86.5 mm shell width, 41 mm shell I.D., and a 24 mm Shimano HOLLOWTECH II spindle. If one of those is off, this is not the right bottom bracket.
Best on true road BB86 builds
This suits the common Shimano-style BB86 / PF41 road setup. It’s a strong choice when you want the correct Shimano-style replacement rather than adapting one standard to another.
A good workshop install matters
Press-fit bottom brackets work best when the shell is clean, in tolerance and the cups go in perfectly straight. If your frame has had recurring creak issues, ask a workshop to inspect the shell before fitting a new BB.
Not designed as a reusable service part
Shimano’s dealer manual states the cups should not be reused after removal, so treat this as a replace-once-installed part rather than something to swap between frames.
Shimano is a Japanese component brand founded in 1921 in Sakai, Osaka. The company began with bicycle component manufacturing and has grown into a global business focused on bicycle components, fishing tackle and rowing equipment, while keeping its headquarters in Sakai.
In cycling, Shimano is best known for building complete component ecosystems that span road, mountain, gravel, commuting and e-bike use. Its range covers drivetrains, brakes, wheels, pedals, shoes and related parts, and the brand has had a long presence in Australia through a local business established in Sydney in 1992.
