At Yotamasters, we know how crucial traction and durability are when you’re tackling rock gardens, steep trails, or unpredictable terrain. That’s why we stand behind the Yukon Grizzly Locker for Toyota 8” differentials, a must-have upgrade for off-road enthusiasts who demand full, positive traction and bulletproof strength.
Whether you're outfitting a classic Toyota Pickup or a modern 4Runner, the Yukon Grizzly Locker is designed to give you total confidence on and off the trail. Let’s dive into why this locker is a serious game-changer for your build.
Product Information
The Yukon Grizzly Locker is a mechanical locking differential built for serious off-roaders. It functions similarly to a ratchet wrench, locking both wheels together under load while allowing one wheel to overrun when necessary (like when cornering). However, it never lets a wheel spin slower than the drive speed ensuring maximum traction at all times.
The entire case and internals are forged from 8620 nickel-chromium-molybdenum tool steel, a premium material chosen for its exceptional strength and resistance to shock-loading. Whether you're rock crawling, mudding, or dealing with uneven terrain, this locker is designed to handle high torque and brutal impacts without failure.
What makes this locker even more appealing is its fully automatic operation with no cables, switches, or buttons. When you need traction, it engages. When you don’t, it disengages seamlessly, keeping your driving smooth and controlled.
Your Ideal Upgrade
We’ve seen countless lockers over the years, but the Yukon Grizzly Locker stands out for a few reasons:
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Unmatched Traction: It locks up exactly when you need it, eliminating wheel spin and transferring torque to both axles for maximum grip.
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Durability Built-In: With massive teeth and a forged steel housing, it’s designed to survive shock loads from broken axles or sudden wheel impacts.
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Set-and-Forget Simplicity: No electronic controls, air compressors, or complicated wiring. Just dependable, mechanical engagement you can trust.
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Tailored for Toyota Enthusiasts: Built to fit Toyota 8” differentials, including specific fitment for multiple Pickup, 4Runner, and Land Cruiser models.
Box Breakdown
When you order from us, your Yukon Grizzly Locker package includes:
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Fully assembled mechanical locker
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Premium-grade internal spider gears and side gears
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Carrier shims and optional bearing kits (depending on model application)
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Installation instructions with detailed torque specs
Pro Tip: Don’t forget to add new carrier bearings to your order for a hassle-free installation.
Made for These Builds
If you fall into any of these categories, this locker is built for you:
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Rock Crawlers needing 100% traction on uneven, technical trails.
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Overlanders who demand reliability and control in backcountry conditions.
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Utility or Towing Drivers hauling heavy loads through mud, snow, or loose gravel.
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Weekend Off-Road Enthusiasts wanting to elevate their build’s performance.
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Toyota Restoration Projects that deserve top-shelf drivetrain upgrades.
From beginners building their first trail rig to seasoned off-road veterans, the Yukon Grizzly Locker is a no-compromise addition.
Essential Features
1. Ratchet-Style Mechanical Locking
Allows wheels to rotate independently when needed (like cornering), but automatically locks under torque load for full traction with no driver input required.
2. Forged 8620 Nickel-Chromium-Molybdenum Steel
The case and internals are crafted from high-grade steel for superior strength and durability, ensuring it stands up to aggressive use.
3. Oversized Teeth for Shock Load Protection
Large engagement teeth are designed to prevent breakage from sudden loads, axle failures, or hardcore rock crawling scenarios.
4. Fully Automatic Engagement
No air compressors, switches, or wiring, just mechanical, automatic engagement you can count on.
5. Compatible with a Wide Range of Toyota Models
Application-specific fitment for multiple generations of Toyota Pickup, 4Runner, and Land Cruiser, ensuring a perfect match for your rig.
Beneficial For
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Off-Roaders & Rock Crawlers: Get the positive traction you need when one tire is off the ground or struggling for grip.
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Overlanders: Navigate challenging trails and remote landscapes with confidence.
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Daily Drivers in Harsh Weather: For those living in snow-prone or muddy regions, this locker offers extra security.
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Towing and Hauling Crews: Maintain traction while pulling heavy trailers, boats, or work equipment.
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Toyota Enthusiasts & Builders: Whether you're restoring a classic or building a trail beast, this locker is a must-have upgrade.
Application Fitment Data
This locker is designed specifically for Toyota 8" differentials and fits a wide range of applications:
4-Cylinder Applications:
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1979-1995 Toyota Pickup/4Runner 22R/RE Rear
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1979-1985 Toyota Pickup/4Runner 4WD 22R/RE Front
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1985-1995 Toyota Pickup/4Runner 2WD 22RET Turbo Rear
V6 Applications:
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1987-1995 Toyota Pickup/4Runner 2WD/4WD V6
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1987-1995 Toyota Pickup/4Runner 2WD/4WD 22RET Turbo
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1991-1997 Toyota FJ80 Land Cruiser Front
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1979-1985 Toyota Pickup/4Runner 4WD Hi-Pinion Front
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1996-2009 Toyota 4Runner (All engines)
If you’re unsure whether this will fit your build, reach out to us. We’ll make sure you get the right part for your application.
Kit Components
Here’s a complete list of what you’ll receive:
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Yukon Grizzly Locker assembly
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Side gears and spider gears
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Carrier shims (model-dependent)
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Carrier bearings (optional but recommended)
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Comprehensive installation guide
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Yukon Extended Service Plan option for lifetime warranty
For a lifetime warranty, we highly recommend purchasing the Yukon Extended Service Plan along with your locker. It’s a small investment for long-term peace of mind.
Trusted by Off-Roaders
We don’t just sell off-road parts, we live and breathe Toyota 4x4s. Our team is made up of Toyota enthusiasts who’ve put products like the Yukon Grizzly Locker to the test on some of the toughest trails in the country.
Why order from us?
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Expert Knowledge: We know these lockers inside and out and can assist with any technical questions.
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Fast, Reliable Shipping: We make sure your parts get to you quickly and in perfect condition.
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Top-Tier Customer Support: We treat every order with the same level of care we’d expect for our own rigs.
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Toyota Specialists: We focus on Toyota 4x4 platforms, so you know you’re getting parts that fit and perform as advertised.
When you shop with us, you're getting more than a product, you're getting trusted advice from a team that shares your passion for off-road performance.
Ready to Roll?
Don’t settle for open differentials or unreliable traction solutions. Upgrade your Toyota’s drivetrain with a Yukon Grizzly Locker and experience the difference firsthand. Whether you’re planning a weekend trail run or prepping for serious overland expeditions, this locker delivers the confidence and capability you need.
Click here to order your locker now and take your build to the next level. Questions? Reach out to us for personalized recommendations.
Serious Traction, No Compromises
At Yotamasters, we take pride in equipping fellow off-roaders with proven, reliable gear designed for serious traction and durability. When you’re ready to invest in a Yukon Grizzly Locker, we’re here to help you make it happen. Trust us to outfit your Toyota with parts that perform when it matters most because every trail, climb, and adventure deserves dependable performance.