What bottom bracket does a Factor Ostro VAM (2021 on) use?
The bottom bracket shell standard on a Factor Ostro VAM (2021 on), and how to pick the right BB.
This frame's shell
| Frame | Factor Ostro VAM (2021 on) |
|---|---|
| Shell standard | T47 external (T47-68 / T47-73) (M47 x 1.0, 68/73 mm) |
| Shell inside diameter | about 46 mm bore, cut with an M47 x 1.0 thread |
| Shell width | 68 mm and 73 mm |
SHELL 68 mm and 73 mm
SPINDLE see table
SPINDLE see table
The Factor Ostro VAM uses a T47 threaded shell (T47A), 86 mm wide with the M47 x 1.0 thread.
Factor uses T47 across its range. Confirm the shell width so you buy the right length T47 BB.
The bottom bracket to buy
Search Amazon for T47 external (T47-68 / T47-73) bottom bracket for your crank spindleaffiliate searchFind T47 external (T47-68 / T47-73) bottom bracket for your crank spindle on eBayaffiliate
Fit a crank to this shell
T47 external (T47-68 / T47-73) shellM47 x 1.0, 68/73 mmShimano Hollowtech II (24 mm) in a T47 external (T47-68 / T47-73) shelldrops inBottom bracket for Trek Emonda SLR (2024 on)related shellHeadset on this framesame frame, headsetThru-axle on this framesame frame, axle
SOURCES: Eminence Cycle Co, WorldTour Road Bike Bottom Bracket Standards 2020-2026 · Escape Collective, Threaded #12: the woes of T47 bottom brackets · White Industries, External T47 Bottom Bracket