Motive Gear D60-410 4.10 ring and pinion bundled with the RA29RMK Koyo master install kit, so a Dana 60 regear goes in with all new bearings and seals.
Dodge and Ram 3/4- and 1-ton trucks, older GM 1-ton 4x4s and Dana 60 rear axles under Ford pickups and vans are common candidates for a 4.10 regear, usually after a tire upgrade, a heavier trailer or a ring and pinion that started to howl. This package pairs a Motive Gear D60-410 ring and pinion with the Motive Gear RA29RMK master install kit with Koyo bearings, so the axle goes back together with new gears and new bearings in one order.
The D60-410 is a 41-tooth ring gear and a 10-tooth pinion, a 4.10:1 ratio. The published specs list a 9.75 in. ring gear held by 12 bolts, a 1.626 in. pinion with 29 splines and standard rotation. Standard rotation means the pinion meets the ring gear below its centerline, the layout used in Dana 60 rear axles and in Dodge and GM Dana 60 fronts.
The Dana 60 has a carrier break: ratios from 3.54 to 4.10 share one carrier, and 4.56 and deeper use another with a thicker ring gear mounting. This set needs a 4.10-and-numerically-lower carrier, the 2-series case. A truck already on 3.54, 3.73 or 4.10 keeps its carrier; one on 4.56 or deeper needs a 4.10-and-down carrier such as the Yukon open carrier case for 4.10 and down. Our Dana 60 ring and pinion buyer's guide covers ratio, rotation and carrier choices in detail.
Read the axle tag or the build stamp on the right axle tube to confirm Dana 60 and its current ratio, then decide on the new ratio from tire size and use. Our guide on finding your axle ratio and code covers the tag and the jack-and-count method. For noise, the Dana 60 rear axle problems guide separates bearing growl from gear whine.
Published applications for the D60-410 include Dodge and Ram 3/4- and 1-ton front and rear Dana 60 axles (including 1994-on Ram rear axles), 1977-1991 GM 1-ton fronts, 1973-1991 GM 1-ton rears, Ford 3/4- and 1-ton rears and 1978-1988 Jeep J20 rears. Ford Dana 60 front axles are reverse cut, so they take the reverse rotation set (Motive D60-410F), not this one. The RA29RMK bearing kit fits both standard and reverse housings, but the gears only fit standard rotation. If you are not sure which rotation you have, send the year, VIN and axle tag before ordering. More Dana 60 parts are in differential hard parts.
The included kit carries carrier and pinion bearings and races, the pinion seal, crush sleeve, pinion nut, depth and carrier shims, ring gear bolts and the cover gasket. Set pinion depth first, crush the sleeve slowly to reach preload, then shim the carrier for backlash. Yukon's Dana 60 setup chart is a useful reference: about 0.052 in. starting pinion shim, 17-30 in-lb preload on new bearings, 0.006-0.011 in. backlash, 110 ft-lb ring gear bolts and 80 ft-lb cap bolts. The carrier is shimmed in tight, so use a Dana 60 housing spreader and never spread past spec. Read the pattern on both sides, fill with 75W-90 or 75W-140 gear oil (add friction modifier if you have a limited slip), and break the gears in gently with an early oil change. A regear is also the time to add traction, such as the Detroit Locker for 4.10-and-down Dana 60s.
| Axle | Dana 60 |
| Ratio | 4.10 (41/10) |
| Gear set | Motive Gear D60-410 |
| Install kit | Motive Gear RA29RMK, Koyo bearings |
| Includes | Ring and pinion, carrier and pinion bearings and races, pinion seal, crush sleeve, pinion nut, shims, ring gear bolts, cover gasket |
| Warranty | 1 year (manufacturer) |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. Ford Dana 60 fronts are reverse cut, and this D60-410 is a standard rotation set. Ford fronts need the reverse rotation 4.10 gears. The bearing kit in this package fits both, but the gears do not.
Only if your axle has 4.56 or deeper gears now. The D60-410 needs a 4.10-and-lower carrier, so trucks on 3.54, 3.73 or 4.10 reuse theirs.
Carrier and pinion bearings and races, the pinion seal, crush sleeve, pinion nut, pinion depth and carrier shims, ring gear bolts and the cover gasket, with Koyo bearings.
Yes. On a 4x4 the front and rear must run the same ratio. If you regear the rear Dana 60 to 4.10, the front has to be 4.10 as well.
Drive easy for the first few hundred miles with no towing and no hard launches, let the axle cool on long runs, then change the gear oil. New gears get hot as the tooth surfaces seat, and that heat is what damages them.
It depends on the factory ratio, engine and transmission. Many diesel trucks on 35s run 4.10, while gas trucks on 37s often go to 4.56 or deeper. Compare cruise rpm with a gear ratio calculator before ordering.
