583 MXZ, 583 FORMULA Z, 583 SUMMIT

We have developed a set of twin pipes for the 583 engine that maintain the original torque at a higher RPM with a net gain of 8-9 HP at 8300-8500 RPMs. The pipes work good on the dyno, but it takes a good tuner to see a gain in the sled. We highly recommend using a shorter intake manifold, trail porting, and head machining.