GM 2500/3500 HD 6.6L Gas Truck Long System 2020-2026

With race inspired technology built into every system, you're looking at the very best the performance exhaust industry has to offer. Our C5 systems are available with 1-3/4", 1-7/8" or 2" primaries with catted or non catted X-pipe mid-section. 1-3/4" mid sections have a 2-1/2" reduction at the flange to connect to stock system. Of course, these are manufactured using the highest quality 304 S/S available and require no modifications to install. Install instructions click here 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 superior fit and performance Merge collectors with scavenger spikes Catted systems feature severe duty 300 cell catalytic converters with the option to upgrade to 400 cell G-Sport catalytic converters. Call before ordering to upgrade. Attn. All ARH products are exclusively manufactured for racing purposes. Installing these products on any vehicle eliminates the legal use, in any capacity, on public roads/highways and may be subject to fines and/or criminal liability as per the Clean Air Act.

CT5-V Blackwing owners, ARH has answered the call for horsepower and performance for your Blackwing! Now available are our 100% U.S. made long tube header 304 S/S full systems that are designed to fit great, install easily and produce outstanding horsepower and torque. This includes 3/8" thick flanges with tig welded and hand ported inlets, merge collectors with scavenger spikes, OEM style clamps, Grade 8 hardware, 3" stainless steel mandrel-bent tubing, our signature Pure Thunder Series mufflers, and dual split rear exit with 4" polished S/S quad tips. Primary sizes available are 1-7/8" and 2". Manufactured to handle whatever performance potential is your goal, most especially if tuning of any kind is planned. For more information, please feel free to reach us. 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 Catted systems feature severe duty 300 cell catalytic converters with the option to upgrade to 400 cell G-Sport catalytic converters. Call before ordering to upgrade. Attn. All ARH products are exclusively manufactured for racing purposes. Installing these products on any vehicle eliminates the legal use, in any capacity, on public roads/highways and may be subject to fines and/or criminal liability as per the Clean Air Act.