7.3 OBS 4 Inch Monster Exhaust System

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Specifications

Stainless, 4-inch constant-diameter pipes, and straight-through muffler outflow stock. Virtually eliminates backpressure and lowers exhaust gas temps. Throaty sound. 5-inch polished tip.

100 percent stainless system extends engine longevity by maintaining the turbine outlet EGT safely within the stock recommendation. The 3-inch Turbine Outlet Pipe, which replaces the smashed stock piece (see below), flows 728 CFM at 1 PSI, beating stock by 26 percent and the nearest competitor by 12 percent. The streamlined 4-inch exhaust pipe and tailpipe are formed of heavy-wall tubing with constant-diameter bends to slash backpressure.

Key Features:

4-inch mandrel bent Stainless Steel construction
Highflow no drone straight-through muffler
Retains factory catalytic converter
Virtually eliminates backpressure
Fits Extended Cab, Short Bed
5-inch CHROME polished tip
Lowers exhaust gas temps
Outflows stock by 26%
5-Year Limited Warranty
CARB E.O. D-161-124
Maximum Airflow

Fitment Note

Fits Extended Cab, Long Bed

Huge 4-inch constant-diameter mandrel-bent stainless steel pipe outflows stock by 26 Percent. Straight-through muffler virtually eliminates backpressure. Retains factory catalytic converter. Includes Turbine Outlet Pipe and 5-inch Chrome polished tip.

Specifications
Stainless, 4-inch constant-diameter pipes, and straight-through muffler outflow stock. Virtually eliminates backpressure and lowers exhaust gas temps. Throaty sound. 5-inch polished tip.

100 percent stainless system extends engine longevity by maintaining the turbine outlet EGT safely within the stock recommendation. The 3-inch Turbine Outlet Pipe, which replaces the smashed stock piece (see below), flows 728 CFM at 1 PSI, beating stock by 26 percent and the nearest competitor by 12 percent. The streamlined 4-inch exhaust pipe and tailpipe are formed of heavy-wall tubing with constant-diameter bends to slash backpressure.

Key Features:
4-inch mandrel bent Stainless Steel construction
Highflow no drone straight-through muffler
Retains factory catalytic converter
Virtually eliminates backpressure
Fits Extended Cab, Short Bed
5-inch CHROME polished tip
Lowers exhaust gas[...]