Dodge Ram exhaust systems by MagnaFlow all feature fast-flowing, 3" stainless steel mandrel-bent tubing and 4" polished stainless steel tip. With the exception of 2002 quad-cab, all systems ship with a performance matched, straight-through performance stainless steel muffler for a great combination of low backpressure and deep performance tone. Expect to see significant gains in horsepower and torque with the added benefit of improved fuel economy, lower engine compartment temperatures and, of course, a great performance sound. Magnaflow exhaust systems have the highest exhaust flow rates and deliver the greatest quality of any Performance Exhaust System.