That's a vague question, as Harley changed fork length that varies from year and models. I believe Softail wideglides, which is the most common front end used on aftemarket choppers, is a little longer than most at 22" long, stock length bottom of tree to axle. My aftermarket wideglide is 34" long (or 12" over) on my V-twin chopper and my Honda has 47" long (or 25" over) wideglide.

Heres a site that may help........

http://www.jammerclub.com/lengths.htm