Bottom bracket
Bottom Brackets are what your crank arms attach to spin.
Types
Also known as a Sealed Bottom Bracket.
These have a lock ring and have either a threaded or cotter pin axle.
Commonly found on inexpensive BMX bikes.
Bottom Brackets are what your crank arms attach to spin.
Also known as a Sealed Bottom Bracket.
These have a lock ring and have either a threaded or cotter pin axle.
Commonly found on inexpensive BMX bikes.
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