Yukon Dana 60 Grizzly Locker - 30 Spline, 4.56 & Up Ratio
YUKYGLD60-4-30
The Yukon Dana 60 Grizzly Locker is a fully mechanical automatic locking differential designed to deliver maximum traction in demanding off-road, rock crawling, towing, racing, and heavy-duty applications. Unlike limited-slip differentials that divide torque between wheels, the Grizzly Locker provides 100% torque transfer to both axle shafts when engaged, helping maintain forward momentum in loose terrain, mud, rocks, snow, and other low-traction conditions.
Built around a heavy-duty forged case and high-strength 8620 heat-treated internals, the Grizzly Locker is engineered to withstand severe shock loads generated by large tires, low-range gearing, high-horsepower engines, and aggressive driving conditions. Designed specifically for Dana 60 axles with 30 spline shafts and 4.56 & numerically higher gear ratios, this locker is an excellent upgrade for trail rigs, rock crawlers, competition vehicles, work trucks, and heavy-duty off-road builds.
Includes:
- Dana 60 Grizzly Locker assembly
- Internal locking mechanism
- Fully assembled carrier unit
Specifications
- Brand: Yukon Gear & Axle
- P/N: YGLD60-4-30
- Product Type: Automatic mechanical locker
- Application: Dana 60 differential
- Spline Count: 30 spline
- Carrier Break: 4.56 and numerically higher ratios
- Internal Material: Heat-treated 8620 alloy steel
- Locking Style: Automatic mechanical locking differential
- Assembly: Fully assembled
- Country of Assembly: USA
- C-Clip Compatible: No
- Quantity: Sold individually
Fitment
|
Year |
Make |
Model |
Differential |
|
1964-1988 |
Chevrolet |
C/K Series, Suburban, G30, V30 |
Dana 60 Front & Rear 30 Spline |
|
1960-2003 |
Dodge |
D/W Series, Ram 2500, Ram 3500, B-Series Vans, Ramcharger |
Dana 60 Front & Rear 30 Spline |
|
1954-2002 |
Ford |
F-100, F-250, F-350, E-Series Vans |
Dana 60 Front & Rear 30 Spline |
|
1967-1987 |
GMC |
C/K Series, Suburban, G35, V3500 |
Dana 60 Front & Rear 30 Spline |
|
1963-1976 |
Jeep |
Wagoneer |
Dana 60 Rear 30 Spline |
|
1966-1970 |
Dodge / Plymouth |
Charger, Dart, Barracuda, GTX, Fury, Road Runner |
Dana 60 Rear 30 Spline |
Important Notes
- Not compatible with C-clip axle applications
- Requires 30 spline axle shafts
- Designed only for Dana 60 carrier breaks using 4.56 and deeper gear ratios
Tech Insight
1. What is a Grizzly Locker?
A Grizzly Locker is a fully mechanical automatic locking differential that automatically transfers power to both wheels when traction is needed while allowing differentiation during turns.
2. Is the Grizzly Locker good for rock crawling?
Yes. The Grizzly Locker is one of the most popular lockers for rock crawling because it delivers full traction to both tires and is built to withstand severe shock loads from large tires and low-range gearing.
3. Will this fit my Dana 60 axle?
This locker fits Dana 60 axles equipped with 30 spline axle shafts and 4.56 or numerically higher gear ratios. Verify your spline count and carrier break before ordering.
4. Can this locker be used on the street?
Yes. The Grizzly Locker is commonly used in street-driven trucks and Jeeps, although drivers may notice characteristic automatic locker behavior during cornering and low-speed maneuvers.
5. Does this locker require air, wiring, or switches?
No. The Grizzly Locker is a fully mechanical design and requires no air compressor, wiring, electrical connections, or driver input to operate.
