Bottom bracket parts set PW-BB73+, designed for 73 mm BSA threaded shells:
Compatible with English (BSA) thread: 1.37” x 24T
Fits 73 mm width bottom bracket shells
Typically includes bearings, threaded cups, and spacers (depending on version)
Suitable for MTB, trekking, or e-bike frames
Ensures smooth crank rotation and drivetrain alignment
Perfect for maintenance, replacement, or performance upgrades.
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