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Nitro Gear and Axle

'14-18 Chevy/GMC 1500 5.3L Front and Rear Gear Package Kit

  • VENDOR: Nitro Gear and Axle
  • YOUR PRICE: Regular price $1,041.31
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 2014-Current Chevy/GMC 1500 5.3L.

If you've fitted larger tires to your vehicle then you are likely experiencing a loss in performance, fuel economy, and more constant transmission gear “hunting" - This is because the larger tires reduce your engine's RPMs below the optimal power band. Re-gearing the differentials in your vehicle is the only way to get your vehicle back into its optimal operating RPM range, thus improving performance and reducing strain on your vehicle's drivetrain. This is especially important for today's vehicles as they feature tall factory gearing and overdrive transmissions which are less tolerant to increase in tire size or the weight of added accessories.


  • Front Differential: 8.25" Rev IFS
  • Rear Differential: GM 9.5 K2
  • Gear Ratio: 3.73, 4.11, 4.56, 4.88
  • Qualifier: with 5.3L


  • 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


  • Other required parts included in Nitro Gear Packages may include solid spacers, yokes or other components as noted.
  • Nitro Master kits include name brand OE quality bearings.
  • *Requires MRG925A if replacing Factory 3.23 & Down Ratios
  • *NC-GM8.25-4 also required for vehicles originally equipped with 3.23 & down ratios.

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