How do I find out the correct Bottom Bracket size when ording the BBSHD 1000w mid-drive motor?
2018 Trek Marlin 7 - The spec sheet only says Sealed cartridge, yet when ordering, I need to pick between 68mm, 100mm, 120mm. How can I find out what my bike needs?
Thanks everyone for the replies..
The Trek Marlin's have a BB of 68mm.
You have to measure your bottom bracket. The measurement (68, etc) refers to the width of the BB frame.