Description
Complete Gear Upgrade Kit. The Nitro Gear & Axle kit delivers both front (AAM9.25-inch) and rear (AAM11.80-inch) ring and pinion sets with a 4.88 ratio, designed specifically to restore performance and fuel economy lost from oversized tires. Packed with install components, this kit from Nitro Gear & Axle makes the gear swap for your Ram 2500 straightforward and reliable.
Construction And Appearance. Built from premium 8620 forged steel gears, each gearset undergoes CNC triple‑lapping and precision machining before a rugged heat treatment, ensuring torque resistance and ultra‑quiet operation. The finish is functional rather than cosmetic, focused on durability and optimal gear meshing.
Installation. Installation requires differential disassembly and precise setup using included master install kits, which include bearings, seals, shims, crush sleeve or preload spacers, gaskets, Loctite, and gear‑marking compound. Wheel drilling is not required, but professional installation or advanced DIY experience is recommended due to the precise nature of gear setup.
Warranty. Nitro Gear & Axle provides a 2‑year limited warranty covering defects in material and workmanship from the date of purchase.
Application. This Nitro Gear & Axle fits 2011‑2015 Ram 2500 models equipped with the AISIN transmission.
CA Residents: WARNING: Cancer and Reproductive Harm
- Nitro Ring and Pinion Kit
- Compatible with AAM 9.25‑Inch Front and 11.80‑Inch Rear Axles
- Gear Ratio of 4.88 Optimized for Larger Tires
- Includes Front and Rear Master Install Kits
- High-Quality 8620 Steel Forgings with CNC Triple‑Lapping
- Timken and Koyo Bearings Included
- Heat‑Treated and Rockwell Hardness-Tested
- Quiet Precision Gear Contact Pattern
- Limited 2‑Year Warranty
- Direct Fit For 2011‑2015 Ram 2500 With Aisin Transmission
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