This is a race proven exhaust system suitable for the street. You 'll see a 7 - 15% increase in horsepower depending on what other modifications you have made to your engine. we have made minor changes to the basic design to allow it to be used with ported heads for modified engines. While some people believe bigger is better , we have found that the 1 1/2 tube gives you the horse power and torque in the power band of your engine. Mate with our super trap muffler for the ultimate in sound and poser rst4462517 specify engine size when ordering.

Includes 1x collector, 1x reducer, 1x collector gasket, 1x pinch nut assembly: 1x nut, bolt, washer
Sae 5/16 x18 hardware.