Elevate your GM/Chevy Duramax LMM's performance with the Sixty-Six 4" DPF-Back Exhaust Kit, designed exclusively for the 2007.5-10 models. This top-quality exhaust system enhances your vehicle's po...
Experience a significant boost in your vehicle's performance with the Sixty-Six 5" DPF-Back Exhaust Kit, tailored specifically for the 2020-22 GM/Chevy Duramax L5P. This kit is designed to enhance ...
Elevate the performance and sound of your 2017-19 GM/Chevy Duramax L5P with the Sixty-Six 5" DPF-Back Exhaust Kit. This kit is meticulously designed to work in harmony with your Diesel Particulate ...
Introducing the Sixty-Six 5" Aluminized Exhaust Kit, custom-designed for the GM/Chevy Duramax LMM models from 2007.5 to 2010. This kit combines exceptional style and performance, engineered to enha...
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