The AFE 49-04060 ATLAS 5" Downpipe-Back Race Exhaust System for your 2001-2010 GM 6.6L Duramax features a 5" mandrel-bent aluminized steel tubing for maximum flow increased horsepower, increased torque and lower EGTs.

The AFE 49-44017 Mach Force XP 4" Down-Pipe Back Race Exhaust System for your 2007.5-2010 GM 6.6L Duramax is engineered to perform in the most extreme environments. This system is constructed from mandrel bent 4" stainless steel tubing for maximum flow, increased horsepower, increased torque and lower EGTs.

The Best Systems Start With the Best Materials Built from 16 gauge T409 stainless steel our SLM Series performance exhaust systems offer a value price without compromising on the quality built into every component. Featuring a two-piece tail we...

The AFE 49-04060NM ATLAS 5" Downpipe-Back No Muffler Exhaust System for your 2001-2010 GM 6.6L Duramax features a 5" mandrel-bent aluminized steel tubing for maximum flow increased horsepower, increased torque and lower EGTs.

The AFE 49-04033NM ATLAS 5" Downpipe-Back No Muffler Race Exhaust System for your 2007.5-2010 GM 6.6L Duramax is engineered to perform in the most extreme environments. This system is constructed from mandrel bent 5" aluminized steel tubing for maximum flow, increased horsepower, increased torque and lower EGTs.

The LARGE Bore HD exhaust is engineered to perform in the most extreme environments. This system is constructed from mandrel bent 4" stainless steel tubing for maximum flow, increased horsepower, increased torque and lower EGTs.

MBRP 5in Down Pipe Back Exhaust System w/o Muffler Aluminized 2007.5-2010 Chevy/GMC 2500/3500

The AFE 49-04059 ATLAS 4" Downpipe-Back Exhaust System for your 2001-2010 GM 6.6L Duramax features a 4" mandrel-bent aluminized steel construction for maximum flow, increased horsepower, torque and lower EGT's.

The AFE 49-04002 ATLAS 4" Downpipe-Back Race Exhaust System for your 2007.5-2010 GM 6.6L Duramax is engineered to perform in the most extreme environments.

The AFE 49-04059NM ATLAS 4" Downpipe-Back No Muffler Exhaust System for your 2001-2010 GM 6.6L Duramax features a 4" mandrel bent construction and a mufflerless "straight-pipe" design for maximum flow, increased horsepower, increased torque and lower EGTs.

MBRP 4" Down Pipe Back Exhaust System w/ Front Pipe 07.5-10 Chevy/GMC 2500/3500 (Aluminized w/ Mufler)

MBRP 4" Down Pipe Back Aluminized Exhaust System w/ Front Pipe w/o Muffler 2007-2010 Chevy/GMC 2500/3500