BB92 Press-Fit (MTB) Bottom Bracket Compatibility
Also known as: BB92, Press Fit 92, PF41 MTB, BB89.5
BB92 is the wider, mountain-bike sibling of BB86 — the same 41mm press-fit bore built around a 24mm spindle, but 92mm wide (89.5mm on some road/cross frames). It is the dominant press-fit standard on modern MTB frames.
Like BB86 it is native to 24mm Shimano cranks, with reducer bottom brackets available for SRAM DUB and other spindles.
BB92 at a glance
- Fitment
- press-fit
- Shell
- 41mm bore, 92mm (89.5mm road) wide, press-fit cups
- Shell width
- 92mm
- Native crank
- 24mm (Shimano Hollowtech II)
BB92 bottom brackets by crank fitment
A BB92frame accepts different cranks depending on the bottom bracket you choose. Pick the group that matches your crankset's spindle.
For 24mm (Shimano Hollowtech II) cranks (8)
Fits: Shimano Hollowtech II, FSA MegaExo (24mm), Race Face 24mm and most 24mm steel-spindle cranks.
- FSAMegaExo MTB crank to press fit BB92 frame (24mm)
- ShimanoDEORE XT PRESS-FIT BOTTOM BRACKET 89.5/92 MM SHELL WIDTH
- ShimanoPRESS-FIT BOTTOM BRACKET 89.5/92 MM
- ShimanoSAINT PRESS-FIT BOTTOM BRACKET 104.5/107 MM SHELL WIDTH
- ShimanoSAINT PRESS-FIT BOTTOM BRACKET 89.5/92 MM SHELL WIDTH
- ShimanoXTR PRESS-FIT BOTTOM BRACKET 89.5/92 MM SHELL WIDTH
- 🚲FSAMegaExo and 24
- 🚲FSAMegaExo MTB crank to press fit BB92 frame with ceramic bearings
For 30mm (BB30 / PF30 / 386EVO) cranks (1)
Fits: 30mm aluminium-spindle cranks — Rotor, Easton/Cannondale SI, FSA 386EVO and BB30 cranks.
Frames with a BB92 bottom bracket
27 frames in our catalogue use the BB92 standard.
- BMCFourstroke R 01
- CommencalClash
- CommencalMeta SX V4
- CommencalMeta SX V5
- CommencalMeta TR V4
- CommencalMeta V5
- CommencalT.E.M.P.O.
- FocusJam
- IbisHakkalügi Disc V2
- IbisMojo SL R V2
- IbisRipley 1st Gen V1
- IbisT-29 V1
- IbisTrans Fat V1
- KonaHei Hei
- KonaHei Hei CR
- KonaProcess 134
- KonaProcess 134 CR/DL
- KonaProcess 153
- KonaProcess 153 CR/DL
- KonaProcess X
- KonaProcess X CR/DL
- LightCarbon2019 new all mountain suspension enduro frame
- LightCarbon29er Hardtail Frame LCM914 Full Hidden Internal Cable Routing
- LightCarbonAffordable Chinese Carbon MTB Frame
- LightCarbonLightweight New Boost Carbon Mtb Bike Frameset
- LightCarbonNew 27.5 Plus 29er Cross Country Mountain Bike Frame
- LightCarbonXC Full Suspension Frame 29er Cross Country MTB Frame
Frequently Asked Questions
Is a BB92 bottom bracket threaded or press-fit?
BB92 is a press-fit standard: the bearing cups press into the frame bore (41mm bore, 92mm (89.5mm road) wide, press-fit cups). Press-fit saves weight and allows a larger spindle, but demands tight frame tolerances and can be more prone to creaking than a threaded shell.
What shell width does a BB92 frame use?
BB92 frames use a 92mm shell (41mm bore, 92mm (89.5mm road) wide, press-fit cups). Always match your bottom bracket to both the standard and your frame's exact shell width before buying.
Which cranks fit a BB92 frame?
With the right bottom bracket, a BB92 frame can run cranks on several spindle standards. In our catalogue we have BB92 bottom brackets for: 24mm (Shimano Hollowtech II); 30mm (BB30 / PF30 / 386EVO). Pick the bottom bracket that matches your crank's spindle — most commonly 24mm (Shimano Hollowtech II).
How many BB92 bottom brackets and frames are listed?
We currently track 9 BB92 bottom brackets and 27 frames built to the BB92 standard, checked against our compatibility engine.
My BB92 bottom bracket creaks — what can I do?
Press-fit creak usually comes from insufficient preload or a bore that is fractionally out of tolerance. Options include a thread-together (compression) bottom bracket that clamps across the shell, careful greasing/retaining compound on the cups, or — on frames with a ~46mm bore — converting to a threaded T47 bottom bracket for a permanent fix.
Other bottom bracket standards
Compare standards
Not sure it fits?
Add your frame, crank and bottom bracket to a build and we'll check the shell, thread and spindle automatically.
Open the Builder9 BB92 bottom brackets checked by our compatibility engine.