This is a new front axle for all Big Dog Models from 2004-11. This is a Universal Axle for the following models (Axle Bolt Included).
Chopper: 2004-07
Mastiff: 2005-11
Pitbull: 2005-11
K-9: 2006-11
Bagger: 2009-11
Mutt: 2008
Coyote: 2009-11
Ridgeback: 2004-11