What bottom bracket does a Trek Crockett (2020 on) use?
The bottom bracket shell standard on a Trek Crockett (2020 on), and how to pick the right BB.
This frame's shell
| Frame | Trek Crockett (2020 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 2020 Trek Crockett was the first Trek to use T47, filling the old 86 mm PF86 shell with a threaded T47 BB.
Earlier Crockett frames were PF86 press fit. A T47 BB will not fit a PF86 frame, so check the model year.
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 shell
SOURCES: BikeRadar, Peace out PressFit, Trek moves to T47 bottom brackets · Velo, Trek confirms use of T47 threaded bottom brackets · White Industries, External T47 Bottom Bracket · Escape Collective, Threaded #12: the woes of T47 bottom brackets