What size is your haro f1 09 bottom bracket?

Answer 1

A Haro F1 uses a "standard USA" bottom bracket with press-in cups (as opposed to a "Euro" bottom bracket, like what road and MTB bikes use). These bottom brackets don't come in sizes because there's only one size.

Bottom bracket spindles do, however, vary based on the crankset you're using. If you're talking about the Haro Fusion cranks that come with that bike, you're talking about a 19MM, 8 spline spindle, which is actually pretty standard.