Overview
The Alloy USA D44488RJLX is a 4.88 ratio ring and pinion gear set for the front Dana 44 reverse-cut axle, with a 210 mm ring gear. Reverse cut describes gears cut for the opposite rotation direction used by reverse-rotation front axles, so the set has to match that axle type rather than a standard Dana 44 front.
A numerically higher ratio such as 4.88 multiplies torque at the wheels, which can offset the loss in pulling power that comes with larger tires. Re-gearing after a tire change is the usual reason for a set like this, and the right ratio depends on tire size and how the vehicle is used.
Key features
- 4.88 gear ratio for front Dana 44 reverse-cut axles
- 210 mm ring gear
- Made from 8620 alloy steel forgings
- Cut with Gleason technology for a precise fit and smooth operation
- Covered by Alloy USA’s exclusive 5-year limited warranty
Choosing a gear ratio
A 4.88 ratio multiplies torque at the wheels, which is why a numerically higher set is often chosen after larger tires are fitted. The gain comes at a cost: the engine turns more at highway speed, so a set like this suits low-speed work and towing better than long highway runs. Tire diameter, intended use and the transmission all shape how much change you will notice.
Gear sets are sold as a matched pair, so the ring and pinion should be replaced together and never mixed with old gears. Budget for pinion bearings and shims if they are worn, since setting pinion depth and bearing preload is where most gear problems start. Recheck the gear mesh and fluid level after the break-in period.
- Tire diameter and how the vehicle is driven
- Axle cut and ring gear size
- Condition of pinion bearings and shims
- Differential fluid after the break-in period
- Speedometer calibration after a ratio change
Specifications
| Brand | Alloy USA |
|---|---|
| Part number | D44488RJLX |
| Axle | Dana 44 Reverse, front |
| Gear ratio | 4.88 |
| Ring gear size | 210 mm |
| Material | 8620 alloy steel forgings |
| Cut | Gleason |
| Warranty | 5-year limited, Alloy USA |
Vehicle fitment
This set is for a front Dana 44 reverse-cut axle with a 210 mm ring gear and a 4.88 ratio. A ring and pinion is sized for one axle, so it is not a universal part even though it carries a universal fit marking. Match the axle housing, cut and ring gear size before ordering, and confirm the year, model and trim of your vehicle.
The set is not a universal part. Check the front axle’s cut direction and ring gear size before ordering.
Installation notes
Ring and pinion sets are best installed and set up by a professional, including backlash and tooth contact checks. A new gear set also needs a break-in period, so take the first miles gently and check the gear mesh again after that.
What’s included
This is the ring and pinion gear set only. Compare the package contents with your installation needs before starting.
