Ring and Pinion Kit for JL NON-RUBICON D30F/D44R 4.88
Upgrading your Wrangler JL or Gladiator JT Sport, Sport S, or Sahara with larger tires gives you the ground clearance and aggressive stance you want—but stock gears pay the price. You’re left with sluggish acceleration, a transmission that constantly hunts for gears on highway hills, and lost low-end crawl control on the trail. Re-gearing isn't just an upgrade; it’s the key to making your Jeep fun to drive again.
The Motive Gear Differential Ring & Pinion Front and Rear Complete Kit is custom-engineered to solve these performance bottlenecks for Dana 30 front and Dana 44 rear axle setups. By restoring your factory power curve and optimizing torque transfer to the ground, this kit delivers snappy street responsiveness and unmatched low-speed trail authority. Built to handle heavy-duty trail abuse, Motive Gear provides the durability and reliability you need to tackle tough terrain with absolute confidence.
Reclaims Lost Acceleration & Drivability: Oversized tires drag down your stock gears, making your Jeep feel sluggish and forcing constant transmission downshifts. This kit re-establishes your power band, giving you back responsive acceleration on and off the highway.
Matched Axle Performance: Engineered specifically for the non-Rubicon Sport, Sport S, and Sahara setups, this kit provides precisely calibrated ratios for both your front Dana 30 and rear Dana 44 axles to ensure smooth, synchronized 4WD operation.
Maximum Crawl Torque: Steeper gear ratios deliver the low-speed torque you need to crawl over trail obstacles, loose dirt, and steep climbs with total control, preventing engine lugging and clutch or torque converter slip.
Trail-Ready Construction: Manufactured from heat-treated 8620 steel, these precision-cut ring and pinion gears withstand severe shock loads, high temperatures, and rugged off-road torque demands.
Reduces Engine & Transmission Strain: Driving big tires on factory axle ratios forces your entire drivetrain to work overtime. Re-gearing reduces strain, keeps operating temperatures lower, and helps extend the life of your engine and transmission.
| Dropdown Value 1 | 4.88 Ratio |
|---|---|
| Manufacturers Part Number | MGK-138 |
| Product Name | Ring and Pinion Kit for JL NON-RUBICON D30F/D44R 4.88 |
| Depth | 12 |
| Hazmat | No |
| Length | 16 |
| Weight | 42.000000 |
| Width | 16 |
| Prop 65 Message | This product can expose you to chemicals including chromium (hexavalent compounds), which are kwn to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov |
| Brand | Motive Gear |
| Item Returns | This item can be returned |
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