Engine, clone 6.5 (212), predator - nr racing, 212 cc predator gas-saving overhead valves for cooler, cleaner performance and longer life. horizontal shaft makes this an ideal all-purpose replacement engine.. 212cc 6.5 hp engine -karts & dune buggies (predator, If you have been thinking of upgrading or replacing your go-kart's engine, then the predator 212cc 6.5 hp mini bike engine is what you want. this is a lot of power in. 212cc (6.5hp) predator engine harbor freight: kart, With the largest displacement of comparable engines in their class, predator engines are fierce on power, performance! predator engines are also the green choice with.