SKU: YGLGM8.5-3-30 / UPC: 883584280354
Yukon Gear YGLGM8.5-3-30 Grizzly Locker For GM 8.5in & 8.6in / 30 Spline / 2.73+
The Yukon Grizzly Locker is a mechanical positive-locking differential built for GM 8.5-inch and 8.6-inch 10-bolt rear axles with 30-spline axles and 2.73 or higher gear ratios. It fits a wide range of Chevrolet Silverado GMC Sierra Buick Electra Cadillac Escalade and more from 1980-2017 delivering 100% power to both tires for unmatched grip in rock crawling serious trails off-road racing and drag applications. Its patented design engages fully under acceleration while disengaging smoothly during turns for everyday drivability.
Key Features
- Hardcore Construction – Beefed-up casing and gears handle extreme abuse in tough conditions.
- Advanced Tooth Design – Patented inner clutch teeth with larger base radius for 350% greater strength over back-cut styles.
- Shock-Load Resistance – Oversized teeth prevent breakage from shock-loading or axle failures.
- Full Power Delivery – Locks both wheels for maximum traction on demand.
- Smooth Turn Disengagement – Automatically unlocks during cornering to reduce driveline bind.
- Versatile Performance – Ideal for rock crawling trails racing and drag strips.
Specifications
| Detail | Value |
|---|---|
| Brand | Yukon Gear & Axle |
| Type | Automatic Locking Differential (Grizzly Locker) |
| Compatibility | GM 8.5in/8.6in 10-bolt rear 30 spline 2.73+ ratios |
| Axle Spline Count | 30 |
| Ring Gear Size | 8.5in / 8.6in |
| Weight | 28.5 lbs |
| Shipping Dimensions | 12in x 12in x 12in |
| Country of Origin | USA |
| Warranty | Limited Lifetime |
Whats Included
- Yukon Grizzly Locker assembly
- Pre-installed clutch springs
- Complete hardware kit
Product Notes
- Requires 2.73 and numerically higher gear ratios
- Direct replacement for open or limited-slip carriers
- Professional installation recommended
- MPN YGLGM8.5-3-30 TURN14_ID 4372663
This Part Fits
| Year Range | Make | Model | Notes |
|---|---|---|---|
| 1980-1989 | Buick | Electra | Estate Wagon Limited Park Avenue T-Type Park Avenue Ultra |
| 2004-2007 | Buick | Rainier | CXL CXL Plus |
| 1980-1987 | Buick | Regal | Base Estate Wagon GNX Grand National Limited Limited Turbo Sport T-Type |
| 1999-2013 | Cadillac | Escalade | Base Hybrid Hybrid Platinum Luxury Platinum Premium |
| 2013 | Chevrolet | Avalanche | Black Diamond LS LT LTZ |
| 2007-2012 | Chevrolet | Avalanche | LS LT LTZ |
| 2002-2006 | Chevrolet | Avalanche 1500 | Base LS LT North Face On Road Edition WBH Z66 Z71 |
| 1987-1994 | Chevrolet | Blazer | Base Cheyenne Custom Deluxe Scottsdale Silverado Silverado Sport |
| 1980-1986 | Chevrolet | C10 C10 Suburban | Big Ten Cheyenne Custom Custom Deluxe Deluxe Scottsdale Silverado |
| 1988-1999 | Chevrolet | C1500 C1500 Suburban | 454 SS Base Cheyenne LS Scottsdale Silverado WT LT |
| 1989-2000 | Chevrolet | C2500 | Base Cheyenne LS Scottsdale Silverado WT |
| 1980-1981 | Chevrolet | Camaro | Base Berlinetta Rally Sport Sport Z28 |
| 1980-1996 | Chevrolet | Caprice | Base Classic Classic Brougham Classic Estate Classic Landau Classic LS Classic LS Brougham Classic LTZ Classic Sport |
| 2004-2012 | Chevrolet | Colorado | Base LS LT Sport Sport LS WT Z71 Z71 LS Z85 Z85 LS |
| 1996-2014 | Chevrolet | Express 1500 | Base LS LT |
| 1980-1995 | Chevrolet | G10 G20 | Base Beauville Bonaventure Chevy Van Nomad Sportvan |
| 1980-1986 | Chevrolet | Impala | Base Estate Sport SS |
| 1980-1986 | Chevrolet | K10 K10 Suburban K20 K20 Suburban K5 Blazer | Cheyenne Custom Custom Deluxe Deluxe Scottsdale Silverado |
| 1988-1999 | Chevrolet | K1500 K1500 Suburban | Base Cheyenne LS Scottsdale Silverado Sport WT LT |
| 1981-1988 | Chevrolet | Monte Carlo | Base CL Landau LS Sport SS Z34 |
| 1987-1991 | Chevrolet | R10 R10 Suburban | Custom Deluxe Scottsdale Silverado |
| 1994-2004 | Chevrolet | S10 | Base LS SS Xtreme ZR2 ZR5 |
| 1999-2017 | Chevrolet | Silverado 1500 | Base Custom High Country Hybrid LS LT LTZ SS SSV WT XFE Z71 |
| 2003-2006 | Chevrolet | SSR | Base |
| 2000-2014 | Chevrolet | Suburban 1500 | Base LS LT LTZ Z71 |
| 1995-2017 | Chevrolet | Tahoe | Base Hybrid Limited LS LT LTZ PPV Premier SSV |
Why Choose Yukon Gear?
- Patented engineering stands up to rock crawling and racing demands
- Full traction without sacrificing turn capability
- Direct fit for GM 8.5/8.6 applications across decades of trucks SUVs
- Backed by limited lifetime warranty for long-term reliability
Frequently Asked Questions
- Q: What gear ratios does this locker support?
- A: Designed for 2.73 and numerically higher ratios in GM 8.5/8.6in diffs.
- Q: Is this locker automatic or selectable?
- A: Automatic locker that engages under acceleration and disengages in turns.
- Q: Will it work for daily street driving?
- A: Yes it allows smooth turns by unlocking one wheel when speed difference detected.
Shipping & Handling
- Method: UPS Ground / FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Secure foam-packed box 12x12x12in 28.5 lbs
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