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Nitro Gear and Axle

'03-10 Dodge Ram 2500/3500 Diesel Front and Rear Gear Package Kit

  • VENDOR: Nitro Gear and Axle
  • PART#: GPRAM-5.13
  • YOUR PRICE: Regular price $1,433.00
REM treatment results in a smoother surface. The end result is less friction, less heat, and less wear. Any machined part has high and low areas left over from machining, grinding, etc. Those high spots become the initial contact points which in turn can become localized hot spots. Those localized hot spots can take the temper out of the heat treated area of the surface and then become a pit. REM reduces that possibility.

Other benefits include elimination of stress risers on the edge of parts and less friction on any metal on metal surfaces.

Customizations Total: $0.00


Nitro Gear and Axle's complete gear kit is designed to improve performance and fuel economy for the 2003-2010 Dodge Ram 2500 and 3500 with the Cummins Diesel Engine.

It is a common misconception that lower gears are only for hardcore off-roading, in actuality the average daily driven vehicle can see huge improvements in both performance and economy by properly matching their vehicle's gear ratio to their tire size all while reducing strain on the vehicles drivetrain.


  • 2003-2010 Dodge Ram 2500 with Cummins Diesel
  • 2003-2010 Dodge Ram 3500 with Cummins Diesel


  • Front Differential: AAM 9.25" Reverse
  • Rear Differential: AAM 11.5"
  • Gear Ratio: 3.42, 3.73, 4.11 4.30, 4.56, 4.88 or 5.13


  • Manufactured in South Korea
  • 8620 Steel Gear Forgings
  • Precision Machining
  • CNC Triple-lapping
  • Heat Treatment
  • Rockwell Hardness Tested


  • Nitro front ring & pinion
  • Nitro front Master Install Kit
  • Nitro rear ring & pinion
  • Nitro rear Master Install Kit


  • 2003-2006 Models will require a front ring gear spacer MRG925A or a 2007 & newer style carrier NC-AAM9.25-COM .
  • 2007-2010 Dodge 2500 & 3500 will still require MRG925A ring gear spacer with aftermarket air locker such as ARBRD197.
  • *Some 2003 Models have a smaller AAM 10.5" rear axle. There is not a Gear Package for this application

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