Threaded BB Technical Info
The frame's bottom bracket has threads cut into the shell. Typically threads are BSA (1.37" x 24tpi), Italian (36 x 24tpi) or French (35mm x 1). Most of the current bottom brackets available from Shimano, SRAM, FSA, and Campagnolo use external bearing cups. Wheels Mfg offers an external bearing cup bottom bracket for both road and mtb bottom bracket shells.
- Shell width: 68mm (road) or 73mm (mountain)
- Shell threads: BSA 1.37 in x 24 TPI
- Drive side cup is left-hand thread
- Non-drive side cup is a right-hand thread
Threaded Tech Links
Road
- Threaded Road ABEC-3 (Shimano) Installation / Warranty
- Threaded Road Angular Contact (Shimano) Installation / Warranty
- Threaded Road Ceramic Hybrid (Shimano) Installation / Warranty
- Threaded Road Zero Ceramic (Shimano) Installation / Warranty
- Threaded Road ABEC-3 (SRAM) Installation / Warranty
- Threaded Road Angular Contact (SRAM) Installation / Warranty
- Threaded Road Ceramic Hybrid (SRAM) Installation / Warranty
- Threaded Road Zero Ceramic (SRAM) Installation / Warranty
MTB
- Threaded MTB ABEC-3 (Shimano) Installation / Warranty
- Threaded MTB Angular Contact (Shimano) Installation / Warranty
- Threaded MTB Ceramic Hybrid (Shimano) Installation / Warranty
- Threaded MTB Zero Ceramic (Shimano) Installation / Warranty
- Threaded MTB ABEC-3 (SRAM) Installation / Warranty
- Threaded MTB Angular Contact (SRAM) Installation / Warranty
- Threaded MTB Ceramic Hybrid (SRAM) Installation / Warranty
- Threaded MTB Zero Ceramic (SRAM) Installation / Warranty
