196cc Viper Engine, Chipper/Shredder, 3" Chipper, 20 to 1 Reduction 196cc Viper Engine, Chipper/Shredder, 3" Chipper, 20 to 1 Reduction 206cc BS Engine, Chipper/Shredder 3" Chipper, 20 to 1 Reduction 305cc Bs Engine, Chipper/Shredder,3" Chipper, 20 to 1 Reduction