Chopper Supply, SeegerCycle.com and eBay.com all sell chopper kits for Harley-Davidson Sportster model motorcycles as of 2015. The kits available include bolt-on and weld-on assembly styles. Not all types of chopper kits are available for all models of Sportsters.
Chopper Supply has chopper kits that fit all models of Sportsters manufactured since 1973. The company stocks three different sizes of bolt-on kits, including those that extend the front wheel 4 to 7 inches, 8 to 10 inches, and 9 to 12 inches. SeegerCycle.com has bolt-on kits available for many models of Harley Sportsters as well. Weld-on and bolt-on kits are available on eBay, but the inventory is constantly changing so interested buyers should check the listings regularly.