What is a mechanical locking differential?

A mechanical locking differential, like the Yukon Grizzly Locker, forces both wheels on an axle to rotate at the same speed. This ensures that if one wheel loses traction, the other wheel still receives power, maximizing grip. It allows for some disengagement for turning on pavement.

What makes the Yukon Grizzly Locker stronger than other designs?

The Grizzly Locker features a patented design with inner clutch teeth that have a larger radius at the base. Yukon Gear states this design offers up to 350% greater strength compared to back-cut designs, helping to resist breakage from shock-loading or catastrophic axle failure.

What else might I need to install this locker?

Installing a differential locker typically requires setting gear backlash and pattern, and it's recommended to use heavy-duty bearings. It's advisable to consult a professional mechanic or refer to detailed installation guides for proper setup.

Yukon Gear Grizzly Locker Ford 8in 31 Spline YGLF8-31

Name: Yukon Gear Grizzly Locker For Ford 8in w/ 31 Spline Axles
Brand: Yukon Gear & Axle
Price: 988.89 USD
Availability: InStock

Yukon Gear Grizzly Locker For Ford 8in w/ 31 Spline Axles

$988.89

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Yukon Gear Grizzly Locker for Ford 8in w/ 31 Spline Axles. Provides 100% power to both tires for maximum traction.

Key Features

Fits Ford 8in rear axles with 31 spline axles.
Provides 100% power to both tires for maximum traction.
Patented internal design with larger radius clutch teeth offers increased strength.
8620 steel internals for added durability.
Assembled in the USA.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

Yukon Gear & Axle is known for building tough drivetrain components, and their Grizzly Locker is a prime example of that commitment. This mechanical locker is designed to give you 100% power to both rear wheels, which is a game-changer for serious off-road driving, rock crawling, or even drag racing. It works by mechanically locking the differential, ensuring that neither tire loses traction when you need it most, but it still allows for some movement when you're turning on pavement.

What sets the Grizzly Locker apart is its internal design. The inner clutch teeth have a larger radius at the base, which Yukon says offers up to 350% greater strength compared to other designs. This means it's built to handle shock-loading and resist breakage, even in demanding situations. The gears themselves are made from 8620 steel, a strong material commonly used for performance differentials, and the entire unit is assembled in the USA. This locker fits a range of Ford 8-inch rear axles with 31-spline axles, commonly found in vehicles like the Ford Mustang, Ford Bronco, and Ford F-100 trucks from various years.

When you're installing a locker like this, it's a good idea to have a solid understanding of differential setup. You'll typically need to set backlash and gear pattern, and it's recommended to use heavy-duty bearings, which this locker is designed to accommodate. This is a serious upgrade for anyone looking to maximize traction and durability in their Ford's rear axle.