Mac Star 21 Engine an evolution of the Hyper 21, the MacStar 21 8-port is re-worked for improved performance. Now featuring a separate turbo plug head button and CNC machined blue anodized aluminum heatsink head for a leaner, powerful, more efficient engine with improved heat dissipation. In addit...

The raw power to exploit a split-second opportunity is there, tempered by the ability to fine-tune and finesse throttle control to the needs of different tracks and situations. And to help keep the 21VZ-B V-Spec-T (P) at the peak of its power, O.S. has given it a billet aluminum piston, hardened ABC...