2011-2016 Duramax 4'' Exhaust powerstroke If you have full support

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

Pair this TCM tuning with our AMDP ECM tuning for shift defuel and torque management control

Cerakote Black tip will not turn brown with heat

Easy filter access for monitoring and cleaning

Easy Installation

2011-2016 Duramax 4'' Exhaust powerstroke If you have full support2011 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