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