GM Truck 5.3L 2014-2018 Long System Dimensions:1-3/4" x 3" Engineered and constructed using 304

Engineered and constructed using 304 Stainless Steel throughout and are fabricated with precision cut

This includes all 304 S/S construction with 100% US made materials

1-7/8" or 2" (for max effort applications) and a 3" exhaust

Consider upgrading to the Full System if you like the sound

If an additional 22 RWHP is just the ticket to make your high winding V6 feel more like a V8

GM Truck 5.3L 2014-2018 Long System Dimensions:1-3/4" x 3" Engineered and constructed using 304ARH long tube headers long system for the GM Truck 5. 3L 2014 2018 features 304 stainless steel 1 3 4" primaries, 3" merge collectors, and y pipe along with all the necessary hardware and gaskets for a bolt on installation. Product features on this system includes: 100% Made in the USA Never Outsourced Made entirely of 304 stainless steel 3 8" thick laser cut flanges for a warp free seal Hand ported TIG welded inlets Optimized primary tube routing for