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Ships within 48 hours · Estimated delivery Aug 26 - Aug 31
Thicker turbine shaft to accommodate larger bearings and higher boost and HP levels
Progressive rate front coil springs improve ride quality and offroad performance
Specially designed for 2003-2018 Cummins engines
it's a premium upgrade built to handle high-pressure fuel demands
5-inch inlet
Flowmaster Super 40 Series 2.5" Dual Inlet/Outlet Universal Chambered Muffler shifters Thicker turbine shaft to accommodateThe Super 40 features Flowmaster's Delta Flow technology. It's larger case profile provides the best of both worlds of performance and sound. The Super 40 has that deep powerful sound of the Original 40 series but with all the benefits of performance and low interior resonance from the Delta Flow technology. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability. Features: Noticeable interior resonance Race proven Delta
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