2014-21 Downpipe 3" (Duramax L5P)

Elevate the performance of your 2017-21 GM/Chevy Duramax L5P with the Sixty-Six 3" Downpipe. Crafted with precision from 409 stainless steel, this 4-bolt style downpipe promises durability and resistance against corrosion. Designed to replace the restrictive factory downpipe, it ensures a smoother flow of exhaust gases, leading to improved throttle response, increased horsepower, and enhanced torque. Experience a noticeable difference in your vehicle's performance and a deeper, more aggressive exhaust note. Specifically designed for 2017-21 GM/Chevy Duramax L5P models. Made from high-quality 409 stainless steel for longevity. 4-bolt style ensures a secure fit and easy installation. 3" diameter for optimal exhaust flow and reduced backpressure. Enhances vehicle performance by improving exhaust gas flow.