Yukon Ford 10.25" Ring & Pinion – Long Pinion, 31-Spline
YUKYG F10.25-373L
This Ford 10.25" ring and pinion gear set is designed for 1993–1999 Ford full-size truck axles. Re-gearing is essential when increasing tire size, correcting lost power, or dialing in torque delivery for towing, off-road use, or heavy-duty applications.
The Ford 10.25" axle is known for its strength and durability in heavy-duty trucks, making it a solid foundation for both work and off-road builds. This gear set is built around a long pinion design and must be installed with proper setup procedures including pinion depth, backlash, and bearing preload to ensure long gear life and quiet operation.
Includes:
- Ford 10.25" Ring & Pinion Gear Set
- Long Pinion Design
Sold as a matched gear set
Installation kit, bearings, shims, seals, and carrier components sold separately unless noted.
Specifications
- Brand: Yukon Gear & Axle
- Product Type: Ring & pinion gear set
- Application: Ford 10.25" axle
- Model Years: 1993–1999
- Available Gear Ratios: 3.73, 4.11, 4.30, 4.56, & 5.38
- Ring Gear Diameter: 10.25"
- Pinion Spline Count: 31-spline
- Pinion Style: Long pinion
- Ring Gear Bolt Count: 12-bolts
- Cover Bolt Count: 12-bolts
- Quantity: Sold as a matched set
Fitment
| Make | Model | Year Range |
|---|---|---|
| Ford | E-250 Econoline | 1985–1998 |
| Ford | E-350 Econoline | 1985–1998 |
| Ford | F-150 | 2000–2004 |
| Ford | F-250 | 1985–1998 |
| Ford | F-250 Super Duty | 1999 |
| Ford | F-350 | 1985–1997 |
| Ford | F-350 Super Duty | 1999 |
- Rear axle applications
- Requires long pinion configuration
- Not compatible with Ford 10.5" or earlier 10.25" variations outside listed years
- Verify axle tag, pinion style, spline count, and current ratio before ordering.
Tech Insight
The Ford 10.25" axle is commonly found in heavy-duty applications where torque load and durability are critical. Re-gearing this axle can significantly improve towing performance and restore drivability when running larger tires, especially in diesel or high-torque gas engine builds.
Lower gear ratios such as 4.56 and 5.38 are ideal for off-road use and large tire setups, while mid-range ratios like 4.11 and 4.30 provide a balance between highway drivability and pulling power. Proper installation is key—gear setup accuracy directly affects noise, heat, and long-term reliability.