Straight flow mufflers cancel out soundwaves by directing them into one another to absorb sound energy without added restriction. Up to 50 additional horsepower, improved throttle response and lower exhaust gas temperatures. Improves fuel mileage and power. 51.5" total length x 10" diameter. Designed to go up the side or rear of the cab. This muffler creates no back pressure, which allows for an average gain of 1/4 mile per gallon. Since the flow is not restricted, the muffler gathers no soot causing soot levels in the engine oil to decrease. 5"ID inlet and outlet. Fits all class 8 trucks with 5" stacks.
Sold individually.

NOTE: Not suitable for use on trucks with DPF systems. Not intended for use on CAT Acert engines. Not to be used to replace any exhaust aftertreatment, like DPF or catalyic converter.