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Ships within 48 hours · Estimated delivery Oct 19 - Oct 24
Flows over 51% more CFM than stock at the same pressure
Chamfered leading edge
7L Race Pipe
AMDP 2022 Unlocked PCM is included for the 2022 Power added tuning
22-24 Cummins is now available on the HP Tuners platform
2011-2016 Duramax 4'' Exhaust duramax Flows over 51% more CFM2011 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
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