Revolution Gear & Axle Discovery Series Gear Package for Jeep (2007-18) Wrangler JK Non-Rubicon, Dana 44 Rear & Dana 30 Front (4.56 Ratio, Timken)

This Revolution Gear & Axle gear package re-gears both axles of a 2007-18 Jeep Wrangler JK non-Rubicon to a 4.56 ratio, covering the rear Dana 44 and front Dana 30. It bundles the front and rear ring and pinion sets with their matching master install bearing kits.

Each gear set is 8620 alloy steel cut and heat treated to meet or exceed original equipment standards, with a 24-spline pinion on the Dana 44 rear and a 26-spline pinion on the Dana 30 front. Both master install kits use Timken bearings. The Dana 30 front carrier break is 3.55/3.73, and a front carrier is required only if you are coming from the factory 3.21 ratio.

A 4.56 is one of the most popular JK regears for owners running larger tires, restoring the acceleration, low-speed control and towing capability that bigger tires take away. Buying it as a verified package removes the guesswork of matching gears and bearing kits front to rear.

This package does not include axle shafts or a locker – add those separately if your build calls for them. Because two axles must be set to the same ratio with correct pinion depth, backlash and preload, professional gear setup is strongly recommended.

Backed by a 2-year warranty against manufacturing defects, this matched front-and-rear package is a complete gearing solution for a non-Rubicon JK big-tire build.