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Ships within 48 hours · Estimated delivery Sep 13 - Sep 18
2023-2024 Trucks require 155-01404 downpipe
✔ Lower EGTs – More efficient exhaust flow helps reduce exhaust gas temperatures
Crafted from premium stainless steel
and drivability—no more sluggish shifts or gear hunting
This product requires aftermarket tuning and is intended for off-road competition use only
GDP Cat & DPF Race Pipes (2015.5-2016 GM 2500/3500 6.6L Duramax) Muffler:No Muffler 2023-2024 Trucks require 155-01404 downpipeBuilt to Last: Constructed from heavy duty 16 gauge T409 stainless steel for maximum durability. Mandrel bent for a perfect fit and improved airflow. Improved flanges ensure a leak free connection. Effortless Installation: Includes contour bent hangers and TorcTite clamps for a hassle free installation. Performance Gains: Expect increased horsepower, lower Exhaust Gas Temperatures (EGTs), and improved airflow. Unleash your truck's potential and let it
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