4 Inch Single Side Exhaust Pipe No Muffler T409 Stainless Steel For 01-07 Silverado/Sierra 2500/3500 Duramax Classic Extended/Crew Cab MBRP Air & Fuel - Fillers & Caps Holley does not recommend changing

Holley does not recommend changing emulsion jets unless you are a competent carburetor tuner and have the correct test equipment to record the changes

32 spline outer

With every wheel embodying over two decades of expertise in the industry

2011-2015 GMC Sierra 2500 6

4 Inch Single Side Exhaust Pipe No Muffler T409 Stainless Steel For 01-07 Silverado/Sierra 2500/3500 Duramax Classic Extended/Crew Cab MBRP Air & Fuel - Fillers & Caps Holley does not recommend changingRELIABILITY AND DURABILITY ARMOR PLUS Series exhaust systems are crafted from corrosion resistant T409 Stainless Steel a value oriented material designed to protect from penetrating rust and will stand up to almost anything you can throw at it. T409 Stainless Steel tubing is easy to clean. If you don't find yourself faced with lots of precipitation and salt, this is all you're ever going to need. All of the tubing is mandrel bent for maximum exhaust