Blue Collar Bobbers and the RYCA RR1 Hardtail Bobber are some bobber motorcycle kits. Blue Collar Bobbers kits fit many different brands and models of motorcycles, while the RYCA kit is designed specifically to fit a Suzuki S40 chassis.
Blue Collar Bobbers Honda kits fit the Ace 750, the Rebel 125 and 250s, the Shadow 400 and 600s, and the Shadow Aero as well as the both the chain and shaft drive versions of the Spirit. Kawasaki bobber kits are made for the Vulcan 400, 800 and 900, while the Yamaha V-Star 650 and 1100 bikes have kits available as well. The company also has kits for the Suzuki S40, as does RYCA, and it makes conversions for the C50 and M50 motorcycles as well.