Bottom Brackets are what your crank arms attach to spin.
Identified off the bike by the roughly 1" tubing around the axle.
These have a lock ring and have either a threaded or cotter pin axle.
Commonly found on inexpensive BMX bikes.
Start request GET /wiki/index.php?oldid=5064&title=Bottom_bracket
IP: 172.18.0.2
HTTP HEADERS:
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ACCEPT: */*
X-ORIGINAL-URI: /wiki/index.php?oldid=5064&title=Bottom_bracket
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X-FORWARDED-SSL: on
X-FORWARDED-PROTO: https
X-FORWARDED-FOR: 18.227.134.45
X-REAL-IP: 18.227.134.45
CONNECTION: close
HOST: wiki2.bikelover.org
CONTENT-LENGTH:
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