Overview
The Alloy USA D44410RJK is a Dana 44 JK front ring and pinion gear set with a 4.10 gear ratio, forged from 8640 steel, and its title names the Jeep JK Wrangler.
The gears are forged from 8640 steel and machined on Gleason machines for accuracy and setup. Oversize tires call for a higher ratio ring and pinion to restore power lost to the larger tires. They suit modified vehicles that run larger tires.
Key features
- Dana 44 JK ring and pinion gear set
- 4.10 gear ratio
- Forged from 8640 steel
- Machined on precision Gleason machines
- Built for the front axle position
- Aimed at modified vehicles with larger tires
Setting up a higher ratio gear
Gear ratio changes how the axle multiplies engine torque and how fast the engine turns at a given road speed. A higher numerical ratio gives more torque at the wheels, which helps with larger tires. It also raises engine speed on the highway, so owners often weigh that trade-off before choosing a set.
Setting up ring and pinion gears takes specialist tools and skill, including pinion depth and backlash checks. Gear sets should be matched between front and rear axles where the vehicle requires matching ratios, and carrier bearing preload is part of the job.
- Check backlash and pinion depth before reassembly
- Use new carrier bearings if the old ones show wear
- Match front and rear gearing where needed
- Recheck gear mesh after the first drive
Specifications
| Brand | Alloy USA |
|---|---|
| Part number | D44410RJK (also shown as ALYD44410RJK) |
| UPC | 804314222314 |
| Product type | Ring and pinion gear set |
| Axle type | Dana 44 JK |
| Axle manufacturer | Dana |
| Axle location | Front (title); Front|Rear (attribute list) |
| Gear ratio | 4.10 |
| Material | 8640 steel, forged |
| Manufacturing | Machined on Gleason machines |
Vehicle fitment
Fitment is based on the product title, which names the Dana 44 JK axle, and the JK chassis code corresponds to the 2007–2018 Jeep Wrangler (JK). No manufacturer vehicle list is stored.
The JK code does not include the earlier TJ, LJ or YJ or the later JL. Check that your axle is a Dana 44 with the right tooth count and carrier. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Suspension components affect handling and braking, so professional installation is recommended. Confirm torque values for your axle before assembly.
- Have the alignment checked after any suspension work.
- Check tire clearance and brake hose and wiring length through the full range of travel.
- Re-check fasteners after the first miles of driving.
- Check your local regulations on suspension height changes.
- Setting up ring and pinion gears requires specialist tools and skills; professional installation is strongly recommended.
- Re-gear both axles to the same ratio when the vehicle needs matching front and rear gearing.
What’s included
One ring and pinion gear set.
Not included: Bearings, install kit, carrier and fluid are not part of this set. Check the package contents against your installation before starting.
