2011-2016 Duramax 4'' Exhaust powerstroke 4” CAT and DPF delete

4” CAT and DPF delete pipe

aerodynamic shape eliminates restrictive sharp bends and chokepoints

An aftermarket exclusive: with 4-1/2" bellows

2011-2022 6

If you have full support you'll get lifetime access to trans tuning

2011-2016 Duramax 4'' Exhaust powerstroke 4” CAT and DPF delete2011 2016 Duramax 6. 6L 4" Polar Exhaust Polar Diesel exhaust kits are designed to concur the elements, made from T409 Stainless Steel, our kits provide the quality your truck deserves. Our exhaust systems are designed with a hassle free, easy installation in mind! Featuring precise pre bent exhaust hangers, stainless lap joint clamps and precise flanges, you can expect excellent fit & finish. With all of our exhaust systems you can count on reduced