Yukon Ford 8.8" Ring & Pinion Gear Set - Std. Rotation, 30-Spline
YUKYG F8.8-308
The Yukon Ring & Pinion Gear Set for Ford 8.8" Standard Rotation Axles is precision engineered to restore or upgrade the performance of your Ford 8.8 differential. Manufactured from high-quality forged steel and precision machined for proper gear mesh, Yukon ring and pinion sets deliver quiet operation, exceptional durability, and long service life in street, towing, performance, and off-road applications.
The Ford 8.8" axle has earned a reputation as one of the strongest and most versatile light-duty rear axles ever produced. Available in gear ratios ranging from 3.08 through 5.71, Yukon makes it easy to optimize acceleration, towing capability, crawl ratio, or highway RPM to match your tire size and intended use.
Includes:
- (1) Ring Gear
- (1) Matching Pinion Gear
- Available Gear Ratios: 3.08, 3.31, 3.55, 3.73, 3.90, 4.11, 4.30, 4.56, 4.88, 5.13 & 5.71
Note: Sold as a matched ring and pinion gear set. Master install kit, bearings, races, seals, shims, crush sleeve, and carrier components are sold separately unless otherwise noted.
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Yukon Gear & Axle |
| Application | Ford 8.8" Rear Axle |
| Rotation | Standard Rotation |
| Ring Gear Diameter | 8.80" |
| Pinion Spline Count | 30 Spline |
| Ring Gear Bolt Count | 10 Bolts |
| Differential Cover Bolts | 10 Bolts |
| Available Ratios | 3.08, 3.31, 3.55, 3.73, 3.90, 4.11, 4.30, 4.56, 4.88, 5.13 & 5.71 |
| Sold As | Matched Ring & Pinion Gear Set |
Fitment
Fits Ford 8.8" Standard Rotation Rear Axles Found In:
- Ford Bronco (1983-1996)
- Ford Crown Victoria (1992-2011)
- Ford E-150 Econoline (1983-2014)
- Ford Expedition (1997-2014)
- Ford Explorer (1991-2010)
- Ford Explorer Sport & Sport Trac
- Ford F-150 (1983-2014)
- Ford Mustang (1979-2014)
- Ford Ranger (1990-2011)
- Lincoln Aviator
- Lincoln Navigator
- Lincoln Town Car
- Lincoln Mark Series
- Mazda B3000 & B4000
- Mazda Navajo
- Mercury Capri
- Mercury Cougar
- Mercury Grand Marquis
- Mercury Marauder
- Mercury Mountaineer
Installation Notes:
- Fits Ford 8.8" standard rotation rear axles only.
- Carrier compatibility depends on the selected gear ratio and carrier break.
- Professional gear setup is strongly recommended.
- A Yukon Master Overhaul Kit is recommended during installation.
- Always verify axle spline count, carrier break, and differential configuration before ordering.
FAQ
Why is the Ford 8.8" axle so popular?
The Ford 8.8 has become one of the most common rear axles used in trucks, Mustangs, off-road vehicles, and custom axle swaps because it offers an excellent balance of strength, affordability, and aftermarket support. Its large 8.8-inch ring gear, 31-spline axle options, and wide range of gear ratios make it capable of handling everything from daily driving to serious off-road abuse.
How do I choose the right gear ratio?
Lower numerical ratios such as 3.08 or 3.31 provide lower engine RPM during highway driving, while higher ratios like 4.56, 4.88, and 5.13 improve low-speed torque, acceleration, towing performance, and crawl ratio for larger tires and off-road applications. Selecting the correct ratio depends on tire size, transmission gearing, engine power, and how the vehicle is used.
Should I replace bearings during a gear installation?
Yes. Installing new gears without replacing worn bearings, races, seals, crush sleeves, and setup components can compromise gear setup and shorten component life. Rebuilding the axle with a complete master install kit helps ensure proper preload, backlash, quiet operation, and long-term reliability.
Will these gears work with a limited-slip differential?
Yes. Yukon Ford 8.8 ring and pinion gears are compatible with both open and limited-slip differentials, provided the carrier matches the selected gear ratio. Always verify carrier break requirements before ordering.
