O.S. Max 30VG(P) rear exhaust Monster Truck engine with Pilot Type Crankshaft.
O.S. Max 30VG(P)-X rear exhaust Monster Truck engine with Recoil Starter and Pilot Type Crankshaft.
O.S. Max 30VG(P) ES Electric Start, Rear Exhaust Monster Truck Engine with Pilot Type Crankshaft.