What is a mechanical locking differential and how does it work?

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, significantly improving grip. It allows for disengagement when turning, which is important for street driving.

What makes the Yukon Grizzly Locker stronger than other designs?

The Grizzly Locker features a patented internal design where the inner clutch teeth have a larger radius at the base. This construction offers increased strength, reportedly up to 350% greater than back-cut designs, helping to resist breakage from shock-loading.

What else might I need to install this locker?

Installing a differential locker typically requires rebuilding the rear axle. You will likely need new axle bearings, seal kits, and potentially ring gear bolts and a new ring and pinion gear set if you are changing the gear ratio. It's recommended to consult a professional mechanic or refer to the manufacturer's installation guide for a complete list of required components and procedures.

Yukon Gear Grizzly Locker For Toyota 8in / 4 Cylinder

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Specifications

Brand: Yukon Gear & Axle
Part #: YGLT8-30
UPC: 883584280194

Yukon Gear Grizzly Locker For Toyota 8in / 4 Cylinder

Name: Yukon Gear Grizzly Locker For Toyota 8in / 4 Cylinder
Brand: Yukon Gear & Axle
Price: 1017.89 USD
Availability: InStock

$1017.89

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Fits 1979-1995 Toyota Pickup. Yukon Gear Grizzly Locker for Toyota 8in / 4 Cylinder. Provides 100% power to both tires.

Key Features

Fits 1979-1995 Toyota Pickup and 1984-1995 Toyota 4Runner with an 8-inch rear axle and 4-cylinder engine.
Yukon Grizzly Locker is a mechanical positive-locking differential that provides 100% power to both tires.
Features a patented internal design with larger radius inner clutch teeth for up to 350% greater strength versus back-cut designs.
The larger teeth are designed to resist breakage caused by shock-loading or catastrophic axle failure.
Utilizes 8620 internals for added strength and 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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Fits these vehicles

Toyota 4Runner 1984-1995
Toyota Pickup 1979-1995

Product Details

Yukon Gear & Axle is known for making tough drivetrain components, and their Grizzly Locker is a prime example of that commitment. If you're looking to significantly improve traction for serious off-road adventures like rock crawling, trail running, or even drag racing in your 1979-1995 Toyota Pickup, this mechanical locker is built for the job. It's designed to send 100% of the engine's power to both rear wheels simultaneously, giving you the grip you need when the going gets tough.

What sets the Grizzly Locker apart is its patented internal design. The inner clutch teeth feature a larger radius at the base, which Yukon claims offers up to 350% greater strength compared to other designs. This beefier construction helps resist breakage from sudden shock loads, a common concern with aggressive driving. The locker also uses 8620 internals for added strength and is assembled in the USA, reflecting a focus on durability and reliable performance for demanding conditions.

While this locker provides maximum traction, it's important to remember it's a mechanical unit. It allows for disengagement while turning, which is crucial for street driving and navigating tighter trails. This is a serious piece of equipment for those who push their Toyota Pickup beyond its factory limits.