Member
Join Date: Aug 2017
Location: Seattle, WA
Posts: 43
Bikes: 1985 Davidson Signature, 1983 Davidson Signature, 2002 Trek 5200, 1973 Raleigh Gran Sport, 1980 Kobe Citation, 1954 Raleigh Sports, 1984 Davidson Tandem, 1991 Specialized Stumpjumper Comp, 1936 Elgin American
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I'm going with a bottom bracket gyro...