GSC P-D Mitsubishi 4G63T Evo 4-9 R4 Camshafts 295/310 Billet (Drag Race Engine Only)

These GSC Power Division R4 camshafts are specifically made for the Mitsubishi 4G63T engine found in Evolution models 4 through 9, but only for dedicated drag race builds. They are constructed from billet material, which is a solid block of metal that's machined to shape, offering a strong foundation for high-performance camshafts. The lift and duration figures, 295 degrees intake and 310 degrees exhaust, are tuned to maximize airflow and power output at higher RPMs, which is crucial for drag racing where every bit of performance counts.

The R4 profile is a popular choice for serious drag racers because it’s designed to work best with other engine modifications common in these builds, like upgraded valvetrain components and forced induction systems. Because these are designed for drag racing, they are not intended for street use or emissions-compliant vehicles. You’ll want to ensure your valvetrain, including springs and retainers, can handle the increased lift and duration these cams provide. This is a serious upgrade for anyone looking to get the most out of their 4G63T in a drag strip environment.

When installing these camshafts, it’s important to follow the manufacturer’s recommendations for break-in procedures to ensure their longevity. Because these are performance camshafts for a specific type of racing, they are not CARB approved and cannot be shipped to California. Make sure your engine build is set up to take full advantage of these aggressive cams for optimal results on the track.