Fit a Shimano Hollowtech II (24 mm) crank in a BBRight press fit shell
Whether a Shimano Hollowtech II (24 mm) crank fits a BBRight press fit shell, and the bottom bracket that makes it work.
The crank and the shell
| Crank spindle | Shimano Hollowtech II (24 mm) (24 mm constant diameter) |
|---|---|
| Frame shell | BBRight press fit (46 mm smooth press-fit bore, 79 mm (asymmetric, offset 11 mm to the non-drive side) wide) |
| Verdict | needs a reducer |
| Bottom bracket to buy | BBRight to 24 mm Shimano reducer bottom bracket |
SHELL BBRight press fit (46 mm smooth press-fit bore, 79 mm (asymmetric, offset 11 mm to the non-drive side) wide)
SPINDLE Shimano Hollowtech II (24 mm) (24 mm constant diameter)
BB BBRight to 24 mm Shimano reducer bottom bracket
SPINDLE Shimano Hollowtech II (24 mm) (24 mm constant diameter)
BB BBRight to 24 mm Shimano reducer bottom bracket
A 24 mm Shimano crank runs in a BBRight 46 mm bore using a BBRight reducer BB that presses into the asymmetric 79 mm shell and steps down to 24 mm.
Because BBRight is offset, buy the BBRight-specific 24 mm reducer, not a plain PF30 one, or the bearing spacing will be wrong.
The bottom bracket to buy
Search Amazon for BBRight to 24 mm Shimano reducer bottom bracketaffiliate searchFind BBRight to 24 mm Shimano reducer bottom bracket on eBayaffiliate
Related fits
Shimano Hollowtech II (24 mm)24 mm spindleBBRight press fit46 mm bore, 79 mmShimano Hollowtech II (24 mm) in a BSA / English threaded shelldrops inShimano Hollowtech II (24 mm) in a Italian threaded shelldrops inShimano Hollowtech II (24 mm) in a T47 external (T47-68 / T47-73) shelldrops inShimano Hollowtech II (24 mm) in a PF30 press fit shellneeds a reducer
SOURCES: Park Tool, Bottom Bracket Standards and Terminology · Wheels Manufacturing, Crankset Spindle Standards & BB Compatibility · Wheels Manufacturing, BB Overall Width Reference Chart