Revolution Gear & Axle 2018+ Jeep JL/Gladiator JT Dana 44 Front Ring & Pinion Master Install Kit
Regearing a Wrangler JL Rubicon or Gladiator JT for 37 in. tires means opening both axles, and the front Dana 44 needs its own set of bearings, shims and hardware. The Revolution Gear & Axle 35-2071 is a new master install kit for the 2018-and-up JL and JT Dana 44 front axle, the one with the 210 mm ring gear that Dana calls the M210. It is also the kit to use when the front axle on one of these Jeeps starts to whine or the pinion seal starts to weep.
The front axle on these Jeeps carries the gears in a cast center section with the pinion set high in the housing. The pinion turns on two tapered roller bearings, preloaded by a crush sleeve, and a shim behind the head sets pinion depth. The carrier, which on many Rubicons holds the factory electric locker, rides on two side bearings, and shims behind them set backlash. Every one of those bearings is pressed off when gears are changed, which damages them, so a regear starts with new ones. Revolution lists this kit with Timken pinion and carrier bearings, pinion and carrier shims, a pinion seal, crush sleeve, ring gear bolts and a cover gasket or silicone. Axle seals and gears are not included.
Front-end noise on a JL can come from wheel hubs, ball joints or the front driveshaft too, so lift the front and spin each wheel by hand, then check the yoke for in-and-out play. If the noise only shows up in 4WD or when the locker is engaged, read our JL locker actuator guide before you open the axle. For a ratio change, run your tire size and engine through the regear guide for bigger tires. If the gears are fine and only bearings or the seal are worn, the Yukon JL Dana 44 front master overhaul kit is built for reusing the original gears.
Revolution lists this kit for the 2018-and-up Dana 44 front axle in the Wrangler JL and Gladiator JT with the 210 mm ring gear. Rubicon models use this axle; most other trims came with the smaller Dana 30 (M186) front, which takes a different kit. Look for the 210 mm marking or check the axle tag, or send us your year and VIN and we will confirm. It is a front-axle kit only; the rear Dana 44 (M220) uses the matching JL/JT Dana 44 rear master install kit. Gears for this axle are cut for the M210, such as the Revolution JL/Gladiator D44 front 4.88 2-cut set, and the front and rear ratios must match.
The front axle has to come apart further than the rear: the axle shafts slide out from the knuckles, and the locker wiring must be unplugged before the carrier comes out. Published setup values for the JL Dana 44 M210 are a 0.045 in. starting pinion shim, 14-26 in-lb of pinion bearing preload, backlash of 0.006-0.010 in. for 5-cut gears or 0.004-0.007 in. for 2-cut gears, ring gear bolts at 135 ft-lb and bearing caps at 70 ft-lb. A clamshell carrier bearing puller makes it much easier to pull the side bearings without damaging the carrier. Paint the teeth and check the pattern, as shown in our backlash and pinion depth guide. Fill with 75W-90 or 75W-140 gear oil, recalibrate the speedometer for the new ratio and tires, and follow the ring and pinion break-in procedure before any towing or trail runs.
| Brand | Revolution Gear & Axle |
| Part number | 35-2071 |
| Fits | Revolution Gear & Axle 2018+ Jeep JL/Gladiator JT Dana 44 Front Ring & Pinion Master Install Kit |
| Vehicle fitment | Jeep Jl/Gladiator Jt (2018) |
| Type | Differential Install Kits |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Usually not. Most non-Rubicon JLs have the Dana 30 (M186) front, which needs a different kit. This kit is for the Dana 44 front with the 210 mm ring gear. Check the axle tag or send us your VIN.
Front only. The rear Dana 44 (M220) in the JL and Gladiator uses a separate rear master install kit, Revolution 35-2072.
No. It is the bearing and setup kit. Buy a gear set made for the JL/JT M210 front in the same ratio as your rear axle.
Revolution lists Timken pinion and carrier bearings, pinion and carrier shims, a pinion seal, crush sleeve, ring gear bolts and a cover gasket or silicone. Axle seals are not included.
Yes. Program the new axle ratio and tire size with a tuner or at the dealer so the speedometer, shift points and stability control work correctly.
