Yukon Gear Ring & Pinion Gear Set For Dana 35/M200 Jeep Sport/Sahara 4.88 Ratio/Open 24 Spline
If your Wrangler JL Sport, Sport S or Sahara has the Dana 35 rear and you have moved up to 35 inch tires or bigger, the factory gearing is probably the reason it feels lazy pulling away, hunts for gears on the highway and struggles on grades. The Yukon Gear and Axle YG D35JL-488 is a new 4.88 ratio ring and pinion set made for that exact axle: the newer-design Dana 35 with the 200 mm ring gear, usually listed as the Dana 35 M200, with a 24-spline pinion and an open differential. It is the gear set to put in the rear when you are regearing the whole Jeep to 4.88.
The pinion takes power from the rear driveshaft and turns the ring gear, which is bolted to the differential carrier. The tooth count difference between the two sets the final drive ratio. At 4.88, the driveshaft turns 4.88 times for every turn of the axle shafts, which multiplies torque at the tires and brings engine speed back into its useful range after a tire size jump. The JL Dana 35 is not the old YJ and TJ Dana 35: Revolution Gear notes that the JL got a newer design, so gear sets for the older axle do not interchange. This set is cut for the M200 housing and its 24-spline pinion yoke.
First confirm the axle. Many JL Sport and Sahara models came with a Dana 44 rear instead of the Dana 35, and every Rubicon has a Dana 44, so check the tag on the rear housing or your build sheet. Next confirm the front axle. The front gears must match the rear ratio exactly, so you will be buying a 4.88 set for the front Dana 30 at the same time. If the reason for the job is noise rather than tire size, drain the oil, look for metal, and roll a gear pattern before deciding whether bearings alone would fix it. A dial indicator with a magnetic base is needed to measure backlash during setup.
Yukon lists this set for the Dana 35 / M200 rear axle under 2018-2019 Jeep Wrangler JL 4WD models: Sport, Sport S, Unlimited Sport, Unlimited Sport S and Unlimited Sahara, with a 24-spline pinion. It does not fit a JL with the Dana 44 M220 rear, any Rubicon, a Gladiator JT, or the older YJ and TJ Dana 35. If your JL is a 2020 or newer model, confirm the rear axle tag reads Dana 35 / M200 and send us your year and VIN so we can check it before it ships. The same axle is also offered at 4.56 if you are running smaller tires: see the Yukon JL Dana 35 4.56 set. More gear sets and axle parts are on our hard parts page.
A ring and pinion should always go in with new pinion and carrier bearings, races, a crush sleeve and a pinion seal. The Yukon JL Dana 35 master overhaul kit covers all of it, and the JL Dana 35 pinion install kit is the lighter option when the carrier bearings are still good. Revolution Gear's published setup chart for the D35JL (M200) gives a 0.045 in starting pinion depth, 0.006-0.010 in backlash for a 5-cut set, 135 ft-lb on the ring gear bolts and 50 ft-lb on the bearing caps. Pinion bearing preload depends on the bearings used: 12-19 in-lb with a Dana Spicer kit and 22-35 in-lb with a Revolution kit, so follow the figure for the kit you install. Use thread locker on the ring gear bolts, check the contact pattern with marking compound before closing it up, and fill with a quality 75W-90 gear oil (or the spec in your owner's manual). Drive easy for the first few hundred miles, avoid towing, and change the oil early. Afterward, update the tire size and axle ratio in the Jeep's computer so the speedometer and shift schedule are correct.
| Brand | Yukon Gear & Axle |
| Part number | YG D35JL-488 |
| Fits | Yukon Gear Ring & Pinion Gear Set For Dana 35/M200 Jeep Sport/Sahara 4.88 Ratio/Open 24 Spline |
| Type | Final Drive Gears |
| 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.
No. Every JL Rubicon uses a Dana 44 front and rear. This set is only for the Dana 35 M200 rear found under some JL Sport, Sport S and Sahara models with a 24-spline pinion.
Yes. The front Dana 30 must run the same ratio as the rear or the 4WD system will bind and wear parts quickly. Plan on a 4.88 set for the front at the same time.
Check the axle tag on the rear housing or the build sheet for your VIN. Some Sport and Sahara models got the Dana 44 rear even without the Rubicon package, so do not go by trim alone. Send us your VIN and we can help.
It is a common choice for JLs that have moved to 35 inch or larger tires. The right ratio depends on tire size, engine, transmission and how the Jeep is used, so compare it with the 4.56 set before ordering.
New bearings, races, crush sleeve and pinion seal, best bought as a master overhaul kit or pinion install kit, plus marking compound, thread locker, gear oil and a dial indicator. Setup should be done by someone experienced with gears.
Yes. Update the tire size and axle ratio settings with a programmer or dealer tool so the speedometer, odometer and shift points read correctly.
