Throttle Addiction is your source for custom motorcycle parts.  We support DIY motorcycle builders in garages and small shops all over the world.  If you're looking to build or customize your motorcycle, we speak your language and are here to help. We carry parts for Sportsters, Vintage Big Twins, Triumphs as well as custom Chopper and Bobber parts.  Orders are fulfilled daily from our warehouse in Eau Claire, WI. We look forward to being your preferred custom motorcycle parts supplier.