RPM OUTLET - WE TAKE THE GUESSWORK OUT OF PERFORMANCE PARTS! ®
Simply mouseover and click on vehicle application or specific power option link for your vehicle.
  DYNO PROVEN TO PROVIDE THE LARGEST POWER GAINS FOR THE 2001-09 GM DURAMAX TURBO DIESEL
 RPM OUTLET.COMSTRATEGY

In keeping with our goal of providing our customers with the best possible value, we have tested a large group of components specifically designed for the GM Duramax.

We have invested many hours evaluating and refining each of the GM Duramax products on our chassis “dyno”, to ensure that we could develop as much power as possible, as safely as possible.

The site menu on the left side of this page, lists the clear winners when it comes to “performance vs. dollar” value. Please check back often as we are always developing new ways to create more horsepower.

Click Here for our DYNO TUNED POWER OPTIONS™ page

MAGNAFLOW XL Performance Series 4/5" Exhaust Systems
for All Duramax Diesels

All MagnaFlow XL Performance D.P.F. Diesel Systems include mandrel-bent stainless steel tubing, a 100% satin finish stainless steel muffler, an optiona muffler delete pipe, saddle clamps, and a welded on polished MagnaFlow single-wall inter-cooled tips.
  • MagnaFlow Performance with a Lifetime Warranty
  • OEM-Style Barbed Hangers
  • Giant Polished Stainless Steel Single-Wall Inter-Cooled Tips
You can always expect significant gains in horsepower, torque, improved fuel economy and a lower EGT (exhaust gas temperature) after installing any aftermarket diesel performance exhaust.


always in stock
always in stock

    MAGNAFLOW Duramax Diesels Kits Feature:
  • Mandrel bent Stainless Steel Pipes
  • 100% Stainless Steel
  • Adds up to 20 horsepower
  • 4/5-inch Polished Stainless Steel Tip
  • Complete with brackets, nuts, bolts, hardware and detailed instructions

FREE U.P.S. GROUND SHIPPING - * Continental U.S. Only


  MAGNAFLOW 4" Turbo-back SINGLE EXIT
Application Price
    4" Turbo-back SINGLE EXIT
  • 2500HD/3500 series
  • LLY/LB7/LBZ motor
  • Part# MAG-16902
$ 539.95
  MAGNAFLOW 4-inch DUAL Turbo-back DUAL EXIT
Application Price
    4" Turbo-back DUAL EXIT
  • 2500HD/3500 series
  • LLY/LB7/LBZ motor
  • Part# MAG-16903
$ 747.95
  MAGNAFLOW 5" Turbo-back SINGLE EXIT
Application Price
    5" Turbo-back SINGLE EXIT
  • 2500HD/3500 series
  • LLY/LB7/LBZ motor
  • Part# MAG-16909
$ 705.95


FREE U.P.S. GROUND SHIPPING - * Continental U.S. Only




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