This All Stainless Steel Magnaflow Downpipe Back Exhaust System fits 2001 - 2005 2500HD and 3500 Extended Cab Long Bed Sierra and Silverado Duramax Diesels.

It features a high flow, giant 4 inch mandrel bent tubing with a 7 inch round muffler, 5 inch polished tip and hardware!

Sounds Awesome, Looks Great, Adds Horsepower and Torque!!!

Most people will agree that the primary benefit to using a MagnaFlow exhaust system on your vehicle is the added horsepower and torque. You will also see better fuel mileage with the MagnaFlow system, as compared to the stock exhaust system. With the price of fuel these days, that's a benefit most of us can't pass up.