Yukon Gear High Performance Replacement Gear Set For Dana 30 Short Pinion in a 4.11 Ratio
Wrangler TJ and Cherokee XJ owners land on this page for two reasons: the front axle has started to whine, or the Jeep has gone up to 31 or 32 inch tires and both axles need a deeper ratio. Yukon part YG D30S-411TJ is a 4.11 ring and pinion for the standard rotation Dana 30 with the short (low) pinion, the front axle under non-Rubicon 1997-2006 TJs and 1996-2001 XJs. It has a 7.20 in. ring gear, a 26-spline pinion and 10 ring gear bolts.
On a TJ or XJ the front pinion sits below the centerline of the axle and spins the ring gear in the same direction as the rear. Every turn of the front wheels takes 4.11 turns of the front driveshaft. Because these Jeeps have no front axle disconnect, the front gears and pinion bearings turn whenever the vehicle moves, so wear shows up as noise in 2WD on the highway, not just on the trail. A 4.11 set multiplies torque about a third more than a 3.07 and roughly 16 percent more than a 3.55, which brings back acceleration and lets the transmission stay in overdrive with moderately larger tires. Yukon's own guidance lists 33 inches as the maximum recommended tire diameter for a Dana 30, so this ratio suits Jeeps on 31 to 33 inch tires; bigger than that is Dana 44 territory.
First confirm the axle: the short pinion Dana 30 has the driveshaft entering low on the housing, while the JK and early Grand Cherokee use a high, reverse rotation pinion that needs a different set. Then confirm the rear ratio by counting the teeth, because the front must match it exactly. Our Dana 30 front axle problems guide helps separate gear noise from the unit bearing, U-joint and ball joint wear these axles are known for. For a step-by-step look at a TJ regear, including the carrier question below, see our TJ Dana 30 regear guide; the process is the same at 4.11.
Yukon lists this set for the Dana 30 front in the 1997-2006 Wrangler TJ and Unlimited, the 1996-2001 Cherokee XJ, the 1996-1998 Grand Cherokee and the 1999-2003 Grand Cherokee with the Dana 30 front. It does not fit the TJ Rubicon (Dana 44 front), the 2007-2018 JK, which needs the JK reverse rotation 4.11 set, or pre-1996 YJ and XJ fronts. Dana 30 carriers come in two ratio series. A 4.11 ring gear bolts to the 3.73-and-up carrier, so a Jeep that came with 3.07 or 3.55 gears will need a new carrier or a locker for that series, such as the Eaton ELocker4 for 3.73-up Dana 30 (check its fitment for your model). If you already have 3.73 or deeper gears, your carrier will take this set. Send us your year and VIN if you want a second check.
Yukon's setup chart lists the Dana 30 with a 0.065 in. OEM pinion shim, 12-15 in-lb preload on new pinion bearings, 0.006-0.010 in. backlash, 55 ft-lb on the ring gear bolts and 60 ft-lb on the bearing caps. Treat the shim as a starting point and set depth from the pattern. Replace every bearing, the crush sleeve and the pinion seal with the YK D30-TJ master overhaul kit; Yukon notes that 2003 and later TJs use 7/16 in. ring gear bolts. Pull the inner shafts carefully and install new inner axle seals with an inner axle seal installer. Fill with 75W-90 GL-5 gear oil and follow our break-in procedure, with an oil change after the first 500 miles. Reprogram the speedometer for the new ratio and tire size.
| Brand | Yukon Gear & Axle |
| Part number | YG D30S-411TJ |
| Fits | Yukon Gear High Performance Replacement Gear Set For Dana 30 Short Pinion in a 4.11 Ratio |
| 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. The TJ Rubicon has a Dana 44 front axle. This set fits the standard rotation, short pinion Dana 30 used on other 1997-2006 TJs and on the 1996-2001 Cherokee XJ.
Only if your axle came with 3.07 or 3.55 gears. Those use the shallower carrier series. A 4.11 ring gear needs the 3.73-and-up carrier, so Jeeps that already have 3.73 or deeper gears can reuse their carrier.
4.11 is a common choice for TJs and XJs on 31 to 32 inch tires, and some owners use it with 33s and a manual transmission. Yukon recommends 33 inches as the maximum tire diameter for a Dana 30.
Yes. Count the teeth on the rear ring and pinion and make sure the rear set has the same tooth count ratio as this front set, or the Jeep will bind in 4WD.
Yukon lists the 1996-1998 and 1999-2003 Grand Cherokee with the Dana 30 front. Confirm your axle has the low, short-style pinion before ordering, or send us your VIN.
A master overhaul kit with bearings, races, shims, crush sleeve and pinion seal, inner axle seals, gear oil, and a carrier for the 3.73-and-up series if you are coming from 3.07 or 3.55 gears.
