BBRight press fit bottom bracket shell (46 mm bore, 79 mm)
What a BBRight press fit shell measures, which crank spindles it hosts, and the bottom bracket to buy.
Published dimensions
| Type | press fit |
|---|---|
| Shell inside diameter | 46 mm smooth press-fit bore |
| Shell width | 79 mm (asymmetric, offset 11 mm to the non-drive side) |
| Thread | none, cups press into the 46 mm bore |
| Crank spindles it hosts | designed around a 30 mm spindle; 24 mm and 28.99 mm cranks need a reducer BB |
SHELL 79 mm (asymmetric, offset 11 mm to the non-drive side)
SPINDLE designed around a 30 mm spindle; 24 mm and 28.99 mm cranks need a reducer BB
SPINDLE designed around a 30 mm spindle; 24 mm and 28.99 mm cranks need a reducer BB
Used on: Cervelo road frames.
BBRight is a Cervelo standard: a 46 mm bore in a 79 mm asymmetric shell, widened only on the non-drive side. Because it is offset, a BBRight crank uses a longer non-drive spindle; a standard PF30 crank is not a drop-in.
Fit a crank to this shell
30 mm spindle (BB30 / PF30 style) in a BBRight press fit shelldrops inShimano Hollowtech II (24 mm) in a BBRight press fit shellneeds a reducerPF30 press fitrelated shell (46 mm bore press fit)BB30 press fitrelated shell (42 mm bore press fit)BB386EVO press fitrelated shell (46 mm bore, 86.5 mm)Specialized OSBBrelated shell (42 or 46 mm bore)
SOURCES: Wheels Manufacturing, BB Overall Width Reference Chart · Park Tool, Bottom Bracket Standards and Terminology