Yukon Gear Grizzly Locker For GM 8.5in & 8.6in / 30 Spline / 2.73+

SKU: YUKYGLGM8.5-3-30

Differential Carriers

YUK Grizzly Lockers...

Yukon Gear & Axle

Yukon Gear Grizzly Locker For GM 8.5in & 8.6in / 30 Spline / 2.73+

SKU: YUKYGLGM8.5-3-30

Differential Carriers

YUK Grizzly Lockers...

IN STOCK! Est Ship 3-5 days. In stock at 1 location (5 available)

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Description

Yukon Gear Grizzly Locker For GM 8.5in & 8.6in / 30 Spline / 2.73+

The Yukon Grizzly Locker is the ultimate in mechanical locking differentials for street, off-road, and drag racing. Grizzly Lockers provide 100% power to both tires, while still allowing for disengagement while negotiating turns.

Additional Information

The Yukon Grizzly Locker is the ultimate in mechanical locking differentials for street; off-road; and drag racing. Grizzly Lockers provide 100% power to both tires; while still allowing for disengagement while negotiating turns.

Part Type

Differential Carrier

Product Overview

Everything about the Yukon Grizzly Locker is hardcore, its casing and gears, its advanced gear tooth design, and its impact on traction and performance. The Yukon Grizzly Locker is a mechanical positive-locking differential that's engineered for rock crawling, serious trail running, off-road racing, and drag racing. The unit provides 100% power to both tires, while still allowing for disengagement while negotiating turns. The Yukon Grizzly Locker is a patented design that features innovations that make it tougher than the competition. Its inner clutch teeth have a larger radius at the base, which offers up to 350% greater strength versus back-cut designs. The Grizzly Locker's larger teeth also resist breakage caused by shock-loading or catastrophic axle failure. It's a serious piece of mechanical engineering for serious driving conditions.

Additional Application Notes
• GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; Uses LM102949/ LM102911 Carrier Bearings GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; Uses LM102949/ LM102911 Carrier Bearings GM 8.5 in.; 2.73 Gear Ratio And Up 2.73 Gear Ratio And Up
• GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; Uses LM102949/ LM102911 Carrier Bearings GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; Uses LM102949/ LM102911 Carrier Bearings 2.73 Gear Ratio And Up
• GM 8.5 in.; 2.73 Gear Ratio And Up
• GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; Uses LM102949/ LM102911 Carrier Bearings GM 8.5 in.; 2.73 Gear Ratio And Up
• GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; Uses LM102949/ LM102911 Carrier Bearings 2.73 Gear Ratio And Up
• 2.73 Gear Ratio And Up
• GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; 2.73 Gear Ratio And Up
• GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals;
• GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.6 in.; 2.73 Gear Ratio And Up
• GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.6 in.; 2.73 Gear Ratio And Up 2.73 Gear Ratio And Up
• GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; Uses LM102949/ LM102911 Carrier Bearings
• GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; Uses LM102949/ LM102911 Carrier Bearings GM 8.5 in.; 2.73 Gear Ratio And Up 2.73 Gear Ratio And Up
• GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; Uses LM102949/ LM102911 Carrier Bearings 2.73 Gear Ratio And Up
• GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; Uses LM102949/ LM102911 Carrier Bearings GM 8.5 in.; 2.73 Gear Ratio And Up 2.73 Gear Ratio And Up
• GM 8.6 in.; 2.73 Gear Ratio And Up GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals;
• GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals;~GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.5 in.; 2.73 Gear Ratio And Up~ GM 8.6 in.; 2.73 Gear Ratio And Up 2.73 Gear Ratio And Up
• GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals;
• GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals;~GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; 2.73 Gear Ratio And Up
• GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.5 in.; 2.73 Gear Ratio And Up
• GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.5 in.; 2.73 Gear Ratio And Up
• GM 8.6 in.; 2.73 Gear Ratio And Up 2.73 Gear Ratio And Up
• GM 8.6 in.; 2.73 Gear Ratio And Up
• GM 8.5 in.; 2.73 Gear Ratio And Up 2.73 Gear Ratio And Up
• GM 8.5 in.; 2.73 Gear Ratio And Up~ GM 8.6 in.; 2.73 Gear Ratio And Up 2.73 Gear Ratio And Up
• GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; Uses LM102949/ LM102911 Carrier Bearings GM 8.5 in.; 2.73 Gear Ratio And Up 2.73 Gear Ratio
• GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; 2.73 Gear Ratio And Up
• GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.5 in.; 2.73 Gear Ratio And Up 2.73 Gear Ratio And Up
• GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals;~GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; 2.73 Gear Ratio And Up
• GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.6 in.; 2.73 Gear Ratio And Up GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals;~GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; 2.73 Gear Ratio And Up
• GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; 2.73 Gear Ratio And Up
• GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.6 in.; 2.73 Gear Ratio And Up 2.73 Gear Ratio And Up
• GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; Yukon Grizzly Lo
• GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.6 in.; 2.73 Gear Ratio And Up GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals;~GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; 2.73 Gear Ratio And Up
• 1993
• GM 8.5 in.; 2.73 Gear
• GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; Uses LM102949/ LM102911 Carrier B
• GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yuk
• GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals;~GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; 2.73 Gear Ratio And Up
• GM 8.6 in.; 2.73 Gear Ratio And Up GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals;~GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; 2.73 Gear Ratio And Up
• GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals;~GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.5 in.; 2.73 Gear Ratio And Up 2.73 Gear Ratio And Up
• GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals;~GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.5 in.; 2.73 Gear Ratio And Up 2.73 Gear Ratio And Up
• GM 8.6 in.; 2.73 Gear Ratio And Up GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals;~GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; 2.73 Gear Ratio And Up
• GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals;~GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; 2.73 Gear Ratio And Up
• GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals;~GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.5 in.; 2.73 Gear Ratio And Up~ GM 8.6 in.; 2.73 Gear Ratio And Up 2.73 Gear Ratio And Up
• GM 8.5 in.; 2.73 Gear Ratio And Up~
• GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; Uses LM102949/ LM102911 Carrier Bearings GM 8.5 in.; 2.73 Gear
• GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; Uses
• G
• GM 8.5 in.; 2.73 Gear Ratio And Up~GM 8.5 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in
• GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Journals; GM 8.6 in.; 2.73 Gear Ratio And Up~GM 8.6 in.; Yukon Grizzly Locker; 2.73 Gear Ratio And Up; 1.78 in. Bearing Jour

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Data: v4.2 - Upd: 2026-11-08 19:58:36

Features

2.73 and up ratio only
8620 internals for added strength
Assembled in the USA
Fits GM 8.5 in. And 8.6 in. w/30 Spline Axles
Fits GM 8.5" and 8.6" with 30 spline axles
Patented internal design reduces common locker failures

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

AAP Selling Package Quantity UOM:	EA
Package UOM	EA
Package Qty	1
Axle Shaft Spline Quantity:	30
Axle Type:	GM 8.6 Rear
Cover Bolt Quantity:	10
Description:	Yukon Grizzly Locker for GM 8.5in./8.6in.; 30 spline; 2.73/up
Material:	Steel
Part Number:	yukYGLGM8.5-3-30
Title:	Yukon Grizzly Locker for GM 8.5" & 8.6", 30 spline, 2.73 & up
Type:	Locking

Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-08 20:22:16

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s	Yukon Gear & Axle, YUKON GEAR AND AXLE, Yukon Gear And Axle (randys)
StreetFX SKU	yukYGLGM8.5-3-30
SFX Item ID	4489492
Accounting SKU	yuk-YGLGM8.5-3-30
Manufacturer SKU	YGLGM8.5-3-30
Manufacturer UPC	883584280354
Alternative References	YGA-28035

Differential Carrier, Grizzly Locker, Chromium Alloy Steel, 30-spline, Rear, GM 8.5 in., GM 8.6 in., Each

Yukon Gear & Axle Grizzly lockers offer fierce power! These robust lockers are the ultimate mechanical locking differentials, replacing your entire carrier assembly. Yukon Grizzly lockers feature forged cases with 8620 internals and a patent-pending internal locking mechanism for maximum strength. Assembled in the USA, these lockers will provide 100 percent power to both your tires, while still allowing for disengagement while negotiating turns. Whether your application is for the street, off-road, or drag racing, Yukon Gear & Axle Grizzly lockers will have your rig roaring with performance.

Product Attributes
Brand	Yukon Gear & Axle
Manufacturer's Part Number	YGLGM8.5-3-30
Part Type	Differential Carriers
Product Line	Yukon Gear & Axle Grizzly Lockers
UPC	883584280354
Differential Case Design Type	GM 8.5/8.6 in.
Remanufactured	No
Aftermarket Carrier Style	Mechanical locker
Cover Bolts	10
Axle Shaft Spline Quantity	30
Manufacturer of Axle	GM
Carrier Material	Chromium alloy steel
Carrier Bearings Included	No
Quantity	Sold individually.
Notes	8620 case and forged internals. Designed for 2.73 and numerically higher gear ratios.

Compatibility

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Yukon Gear Grizzly Locker For GM 8.5in & 8.6in / 30 Spline / 2.73+

Yukon Gear Grizzly Locker For GM 8.5in & 8.6in / 30 Spline / 2.73+

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Product Overview

Features

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Product Details

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