Classic H-D looks with a ride quality only found on a Roadsmith Hit the road with the Roadsmith HDT conversion kit and experience the trike-riding difference. With a longer wheelbase, generous additional storage, independent suspension, disc brakes, optional electric reverse, and Roadsmith steering kit, you may never want to return home! Independent Rear Suspension The smooth ride of the Roadsmith HDT is primarily due to our innovative suspension system that offers a ride like no other trike. The Roadsmith HDT conversion is designed for the 1996 and newer Harley Davidson Touring models. That's the Road Kings, Classics, Street Glides and Ultra Classics. The Roadsmith features our independent rear suspension with a 10" longer wheelbase. That, in simple terms, means it rides like no other trike on the market.