Overview
The G2 Axle and Gear 4-JKRUB-456 is a 4.56 ratio front and rear ring and pinion kit for the Rubicon Jeep Wrangler JK. The JK chassis code in the title covers the 2007-2018 Wrangler. It is made for Rubicon models, which use Dana 44 axles front and rear.
Because both axles are Dana 44s, the same gear ratio goes into the front and the rear. The kit includes matched master installation kits for each end of the vehicle, so the front and rear gear sets are fitted to their own carriers in one job.
Key features
- Front and rear 4.56 ratio ring and pinion sets
- Dana 44 front and Dana 44 rear axles
- Matched master installation kits for both axles
- Computer heat treated 8620 steel gears
- Built to original equipment specifications
- Limited lifetime warranty
Rubicon axle upkeep
Dana 44 carriers are robust, but they still need regular checks after a gear change. Look over the carrier bearings, pinion seal and axle shaft seals while the cover is off, and make sure the case bolts are at the correct tightness once the job is finished. Clean the carrier thoroughly before fitting the new gears so no old metal remains in the housing.
Because the front and rear gears change together, a Rubicon owner should also think about the driveline. Check the U-joints and slip yokes after the first few trail outings, since a change in gearing can load them differently. Keeping the gear oil fresh and watching for leaks around the axle ends are simple habits that extend the life of the new gears.
- Carrier bearing and pinion seal inspection
- Case bolt tightness after the job
- U-joint and slip yoke checks on the trail
Specifications
| Brand | G2 Axle and Gear |
|---|---|
| Part number | 4-JKRUB-456 |
| UPC | 700007521551 |
| Gear ratio | 4.56 |
| Front axle | Dana 44 JK |
| Rear axle | Dana 44 JK |
| Material | Computer heat treated 8620 steel |
| Models | Rubicon |
| Warranty | Limited lifetime |
Vehicle fitment
The JK chassis code in the name covers the 2007-2018 Wrangler. The kit is made for Rubicon models with Dana 44 axles at both ends.
The 2007-2018 range covers the JK generation only, so the TJ, LJ and JL Wranglers are not covered. A non-Rubicon JK should confirm its axle setup before ordering. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Set pinion depth and gear backlash on each axle after the gears are fitted, and use the master installation kit that came with each gear set. A Dana 44 front carrier needs the matching front gears, so check the front axle type before you start the swap.
What’s included
Front and rear 4.56 ring and pinion sets, plus matched front and rear master installation kits.
