O.S. MAX 21VZ-R(P) Ver.2 OS L-OS13871 so you want an engine that has class leading power, strong torque for punching out of corners and complete reliability. The latest 21VZ-R has it all and more!! The crankshaft is a complete work of art and is the result of many hours in design and testing. In fact, everything has been optimised in this engine to ensure the ultimate performance out on the track.