3.5" Downpipe Down Pipe For GM GMC Sierra Chevrolet Silverado Duramax L5P 2017-2023

Note: We cannot ship this Item to California.

California emissions notice: NOT LEGAL FOR SALE OR USE IN CALIFORNIA. This product has not been granted a California Air Resources Board (CARB) and EPA Executive Order for the applications listed. Orders for this product cannot be shipped to a California address.

• 3.5" Stainless Steel Piping
• 20% better flow rate than the factory pipe
• Heat wrap included to help keep engine bay temperatures down
• Greater heat-retention
• Will not affect emissions systems
• Maximum flow for competition applications
• 4-bolt flange, two studs installed
• Completely eliminates the DOC
• *Off-road use only. Custom tuning required*