
Improve your truck’s exhaust flow and performance with the MBRP 5-Inch Downpipe-Back Exhaust System. Designed for 2001–2004 Chevrolet Silverado and GMC Sierra 2500HD/3500HD models equipped with the 6.6L Duramax, this system delivers durable construction and a more aggressive tone. Built from aluminized steel, it offers a value-driven solution without compromising on performance.
Key Features:
Downpipe-Back Configuration – Replaces exhaust system from the downpipe to the tailpipe
5-Inch Mandrel-Bent Tubing – Maximizes flow for improved power and lower EGTs
Aluminized Steel Construction – Cost-effective material with solid corrosion resistance
Single Side Exit – Traditional appearance and simple routing
Armor Lite Series – Durable performance at an affordable price
1-Year Warranty – Coverage against material and workmanship defects
Vehicle Fitment:
Fits the following models equipped with 6.6L Duramax Diesel (Extended Cab and Crew Cab only):
Excludes 2002–2004 California emissions models and vehicles equipped with a catalytic converter.
Chevrolet Silverado 2500HD / 3500 (2001–2004)
GMC Sierra 2500HD / 3500 (2001–2004)
Includes:
MBRP 5-Inch Downpipe-Back Exhaust System
Single side exit tailpipe
All necessary clamps and installation hardware
Installation instructions