Yukon Gear Grizzly Locker GM 8.5"/8.6" 30 Spline 2.73+ Ratio — Locking Differential

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SKU: YUKYGLGM8.5-3-30
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Sale price$1,031.99 Regular price$1,073.00
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Yukon Gear & Axle

Yukon Gear & Axle is the off-road and truck differential expert — gear sets, lockers, axle shafts, and complete axle assemblies for Dana 30, Dana 44, Dana 60, and modern AAM axles. The trusted source for rock-crawler and overland gear changes.

Maximize Your Grip with the Yukon Gear Grizzly Locker

The Yukon Gear Grizzly Locker is the ultimate choice for drivers seeking uncompromising traction and performance. This hardcore mechanical locking differential is engineered to provide 100% power to both wheels simultaneously, ensuring you maintain maximum grip and control on challenging trails, during off-road excursions, and in competitive racing scenarios.

Engineered for Extreme Performance

Featuring a robust casing and gears with an advanced tooth design, the Grizzly Locker is built to withstand extreme forces. Its patented innovation includes inner clutch teeth with a larger radius at the base, offering up to 350% greater strength compared to conventional designs. This superior construction effectively resists breakage from shock-loading or catastrophic axle failures, making it a reliable upgrade for demanding applications.

  • 100% Locked Traction: Delivers full power to both tires for superior grip.
  • Mechanical Locking: Provides consistent and reliable engagement.
  • Enhanced Strength: Patented design with reinforced teeth for maximum durability.
  • Versatile Fitment: Designed for GM 8.5-inch and 8.6-inch differentials.
  • Optimized for Performance: Ideal for off-road, racing, and heavy-duty use.

This Grizzly Locker is specifically designed for GM 8.5-inch and 8.6-inch differentials with 30 spline axles and a gear ratio of 2.73 and numerically higher. Experience the hardcore difference and superior performance that only Yukon Gear & Axle can provide.

Fits: GM 8.5" & 8.6" differentials, 30 spline, 2.73+ gear ratio.

Find the ultimate traction solution at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1980-1989 Buick Electra Estate Wagon
1980-1989 Buick Electra Limited
1980-1989 Buick Electra Park Avenue
1985-1989 Buick Electra T-Type
1989 Buick Electra Park Avenue Ultra
2004-2005 Buick Rainier CXL Plus
2004-2007 Buick Rainier CXL
1980-1982 Buick Regal Sport
1980-1987 Buick Regal Base
1980-1987 Buick Regal Limited
1982 Buick Regal Limited Turbo
1982-1983 Buick Regal Estate Wagon
1983-1986 Buick Regal T-Type
1984-1987 Buick Regal Grand National
1987 Buick Regal GNX
1999-2000 Cadillac Escalade Base
2002-2013 Cadillac Escalade Base
2008-2013 Cadillac Escalade Platinum
2009-2013 Cadillac Escalade Hybrid
2010-2013 Cadillac Escalade Hybrid Platinum
2011-2013 Cadillac Escalade Luxury
2011-2013 Cadillac Escalade Premium
2007-2012 Chevrolet Avalanche LTZ
2007-2012 Chevrolet Avalanche LS
2007-2012 Chevrolet Avalanche LT
2013 Chevrolet Avalanche Black Diamond LS
2013 Chevrolet Avalanche Black Diamond LT
2013 Chevrolet Avalanche Black Diamond LTZ
2002-2003 Chevrolet Avalanche 1500 North Face
2002-2003 Chevrolet Avalanche 1500 On Road Edition
2002-2005 Chevrolet Avalanche 1500 Base
2002-2006 Chevrolet Avalanche 1500 Z71
2003 Chevrolet Avalanche 1500 WBH
2004-2006 Chevrolet Avalanche 1500 Z66
2005-2006 Chevrolet Avalanche 1500 LS
2005-2006 Chevrolet Avalanche 1500 LT
1987 Chevrolet Blazer Custom Deluxe
1987-1994 Chevrolet Blazer Silverado
1988-1991 Chevrolet Blazer Scottsdale
1992-1993 Chevrolet Blazer Cheyenne
1994 Chevrolet Blazer Silverado Sport
1994 Chevrolet Blazer Base
1980 Chevrolet C10 Big Ten
1980 Chevrolet C10 Custom Deluxe
1980-1981 Chevrolet C10 Cheyenne
1980-1986 Chevrolet C10 Scottsdale
1980-1986 Chevrolet C10 Silverado
1981 Chevrolet C10 Deluxe
1981-1986 Chevrolet C10 Custom
1980 Chevrolet C10 Suburban Custom Deluxe
1980 Chevrolet C10 Suburban Scottsdale
1980 Chevrolet C10 Suburban Silverado
1981 Chevrolet C10 Suburban Deluxe
1981-1986 Chevrolet C10 Suburban Custom
1982 Chevrolet C10 Suburban Scottsdale
1982-1986 Chevrolet C10 Suburban Silverado
1984-1986 Chevrolet C10 Suburban Scottsdale
1988-1992 Chevrolet C1500 Scottsdale
1988-1998 Chevrolet C1500 Cheyenne
1988-1998 Chevrolet C1500 Silverado

…and 278 additional fitments. Contact us to confirm yours.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Yukon Gear & Axle

Yukon Gear & Axle is the off-road and truck differential expert — gear sets, lockers, axle shafts, and complete axle assemblies for Dana 30, Dana 44, Dana 60, and modern AAM axles. The trusted source for rock-crawler and overland gear changes.

Maximize Your Grip with the Yukon Gear Grizzly Locker

The Yukon Gear Grizzly Locker is the ultimate choice for drivers seeking uncompromising traction and performance. This hardcore mechanical locking differential is engineered to provide 100% power to both wheels simultaneously, ensuring you maintain maximum grip and control on challenging trails, during off-road excursions, and in competitive racing scenarios.

Engineered for Extreme Performance

Featuring a robust casing and gears with an advanced tooth design, the Grizzly Locker is built to withstand extreme forces. Its patented innovation includes inner clutch teeth with a larger radius at the base, offering up to 350% greater strength compared to conventional designs. This superior construction effectively resists breakage from shock-loading or catastrophic axle failures, making it a reliable upgrade for demanding applications.

  • 100% Locked Traction: Delivers full power to both tires for superior grip.
  • Mechanical Locking: Provides consistent and reliable engagement.
  • Enhanced Strength: Patented design with reinforced teeth for maximum durability.
  • Versatile Fitment: Designed for GM 8.5-inch and 8.6-inch differentials.
  • Optimized for Performance: Ideal for off-road, racing, and heavy-duty use.

This Grizzly Locker is specifically designed for GM 8.5-inch and 8.6-inch differentials with 30 spline axles and a gear ratio of 2.73 and numerically higher. Experience the hardcore difference and superior performance that only Yukon Gear & Axle can provide.

Fits: GM 8.5" & 8.6" differentials, 30 spline, 2.73+ gear ratio.

Find the ultimate traction solution at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1980-1989 Buick Electra Estate Wagon
1980-1989 Buick Electra Limited
1980-1989 Buick Electra Park Avenue
1985-1989 Buick Electra T-Type
1989 Buick Electra Park Avenue Ultra
2004-2005 Buick Rainier CXL Plus
2004-2007 Buick Rainier CXL
1980-1982 Buick Regal Sport
1980-1987 Buick Regal Base
1980-1987 Buick Regal Limited
1982 Buick Regal Limited Turbo
1982-1983 Buick Regal Estate Wagon
1983-1986 Buick Regal T-Type
1984-1987 Buick Regal Grand National
1987 Buick Regal GNX
1999-2000 Cadillac Escalade Base
2002-2013 Cadillac Escalade Base
2008-2013 Cadillac Escalade Platinum
2009-2013 Cadillac Escalade Hybrid
2010-2013 Cadillac Escalade Hybrid Platinum
2011-2013 Cadillac Escalade Luxury
2011-2013 Cadillac Escalade Premium
2007-2012 Chevrolet Avalanche LTZ
2007-2012 Chevrolet Avalanche LS
2007-2012 Chevrolet Avalanche LT
2013 Chevrolet Avalanche Black Diamond LS
2013 Chevrolet Avalanche Black Diamond LT
2013 Chevrolet Avalanche Black Diamond LTZ
2002-2003 Chevrolet Avalanche 1500 North Face
2002-2003 Chevrolet Avalanche 1500 On Road Edition
2002-2005 Chevrolet Avalanche 1500 Base
2002-2006 Chevrolet Avalanche 1500 Z71
2003 Chevrolet Avalanche 1500 WBH
2004-2006 Chevrolet Avalanche 1500 Z66
2005-2006 Chevrolet Avalanche 1500 LS
2005-2006 Chevrolet Avalanche 1500 LT
1987 Chevrolet Blazer Custom Deluxe
1987-1994 Chevrolet Blazer Silverado
1988-1991 Chevrolet Blazer Scottsdale
1992-1993 Chevrolet Blazer Cheyenne
1994 Chevrolet Blazer Silverado Sport
1994 Chevrolet Blazer Base
1980 Chevrolet C10 Big Ten
1980 Chevrolet C10 Custom Deluxe
1980-1981 Chevrolet C10 Cheyenne
1980-1986 Chevrolet C10 Scottsdale
1980-1986 Chevrolet C10 Silverado
1981 Chevrolet C10 Deluxe
1981-1986 Chevrolet C10 Custom
1980 Chevrolet C10 Suburban Custom Deluxe
1980 Chevrolet C10 Suburban Scottsdale
1980 Chevrolet C10 Suburban Silverado
1981 Chevrolet C10 Suburban Deluxe
1981-1986 Chevrolet C10 Suburban Custom
1982 Chevrolet C10 Suburban Scottsdale
1982-1986 Chevrolet C10 Suburban Silverado
1984-1986 Chevrolet C10 Suburban Scottsdale
1988-1992 Chevrolet C1500 Scottsdale
1988-1998 Chevrolet C1500 Cheyenne
1988-1998 Chevrolet C1500 Silverado

…and 278 additional fitments. Contact us to confirm yours.

Product Details

Product Description

About Yukon Gear & Axle

Yukon Gear & Axle is the off-road and truck differential expert — gear sets, lockers, axle shafts, and complete axle assemblies for Dana 30, Dana 44, Dana 60, and modern AAM axles. The trusted source for rock-crawler and overland gear changes.

Maximize Your Grip with the Yukon Gear Grizzly Locker

The Yukon Gear Grizzly Locker is the ultimate choice for drivers seeking uncompromising traction and performance. This hardcore mechanical locking differential is engineered to provide 100% power to both wheels simultaneously, ensuring you maintain maximum grip and control on challenging trails, during off-road excursions, and in competitive racing scenarios.

Engineered for Extreme Performance

Featuring a robust casing and gears with an advanced tooth design, the Grizzly Locker is built to withstand extreme forces. Its patented innovation includes inner clutch teeth with a larger radius at the base, offering up to 350% greater strength compared to conventional designs. This superior construction effectively resists breakage from shock-loading or catastrophic axle failures, making it a reliable upgrade for demanding applications.

  • 100% Locked Traction: Delivers full power to both tires for superior grip.
  • Mechanical Locking: Provides consistent and reliable engagement.
  • Enhanced Strength: Patented design with reinforced teeth for maximum durability.
  • Versatile Fitment: Designed for GM 8.5-inch and 8.6-inch differentials.
  • Optimized for Performance: Ideal for off-road, racing, and heavy-duty use.

This Grizzly Locker is specifically designed for GM 8.5-inch and 8.6-inch differentials with 30 spline axles and a gear ratio of 2.73 and numerically higher. Experience the hardcore difference and superior performance that only Yukon Gear & Axle can provide.

Fits: GM 8.5" & 8.6" differentials, 30 spline, 2.73+ gear ratio.

Find the ultimate traction solution at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1980-1989 Buick Electra Estate Wagon
1980-1989 Buick Electra Limited
1980-1989 Buick Electra Park Avenue
1985-1989 Buick Electra T-Type
1989 Buick Electra Park Avenue Ultra
2004-2005 Buick Rainier CXL Plus
2004-2007 Buick Rainier CXL
1980-1982 Buick Regal Sport
1980-1987 Buick Regal Base
1980-1987 Buick Regal Limited
1982 Buick Regal Limited Turbo
1982-1983 Buick Regal Estate Wagon
1983-1986 Buick Regal T-Type
1984-1987 Buick Regal Grand National
1987 Buick Regal GNX
1999-2000 Cadillac Escalade Base
2002-2013 Cadillac Escalade Base
2008-2013 Cadillac Escalade Platinum
2009-2013 Cadillac Escalade Hybrid
2010-2013 Cadillac Escalade Hybrid Platinum
2011-2013 Cadillac Escalade Luxury
2011-2013 Cadillac Escalade Premium
2007-2012 Chevrolet Avalanche LTZ
2007-2012 Chevrolet Avalanche LS
2007-2012 Chevrolet Avalanche LT
2013 Chevrolet Avalanche Black Diamond LS
2013 Chevrolet Avalanche Black Diamond LT
2013 Chevrolet Avalanche Black Diamond LTZ
2002-2003 Chevrolet Avalanche 1500 North Face
2002-2003 Chevrolet Avalanche 1500 On Road Edition
2002-2005 Chevrolet Avalanche 1500 Base
2002-2006 Chevrolet Avalanche 1500 Z71
2003 Chevrolet Avalanche 1500 WBH
2004-2006 Chevrolet Avalanche 1500 Z66
2005-2006 Chevrolet Avalanche 1500 LS
2005-2006 Chevrolet Avalanche 1500 LT
1987 Chevrolet Blazer Custom Deluxe
1987-1994 Chevrolet Blazer Silverado
1988-1991 Chevrolet Blazer Scottsdale
1992-1993 Chevrolet Blazer Cheyenne
1994 Chevrolet Blazer Silverado Sport
1994 Chevrolet Blazer Base
1980 Chevrolet C10 Big Ten
1980 Chevrolet C10 Custom Deluxe
1980-1981 Chevrolet C10 Cheyenne
1980-1986 Chevrolet C10 Scottsdale
1980-1986 Chevrolet C10 Silverado
1981 Chevrolet C10 Deluxe
1981-1986 Chevrolet C10 Custom
1980 Chevrolet C10 Suburban Custom Deluxe
1980 Chevrolet C10 Suburban Scottsdale
1980 Chevrolet C10 Suburban Silverado
1981 Chevrolet C10 Suburban Deluxe
1981-1986 Chevrolet C10 Suburban Custom
1982 Chevrolet C10 Suburban Scottsdale
1982-1986 Chevrolet C10 Suburban Silverado
1984-1986 Chevrolet C10 Suburban Scottsdale
1988-1992 Chevrolet C1500 Scottsdale
1988-1998 Chevrolet C1500 Cheyenne
1988-1998 Chevrolet C1500 Silverado

…and 278 additional fitments. Contact us to confirm yours.

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