Fits select 1960-1993 Chevrolet, GMC, Ford, Dodge, Jeep, and International models with a Dana Spicer 44 front axle and 19 spline outer stubs.

Yukon Hardcore Drive Flange Kits are engineered for maximum strength in extreme off-road environments. Designed to replace standard internal manual locking hubs, this kit provides a permanent, solid connection between the axle shaft and the wheel hub, eliminating the weak points associated with traditional locking mechanisms. These flanges are ideal for high-torque applications where drivetrain reliability is critical.

The kit features heavy-duty drive flanges and non-engraved caps for a clean, understated appearance on the hub face. Each component is manufactured to precise tolerances to ensure a secure fit and long-term durability against trail abuse.

• Replaces internal manual locking hubs with high-strength drive flanges
• Compatible with Dana Spicer 44 front axles
• Fits 19 spline outer axle stubs
• Includes two drive flanges and two non-engraved caps
• All necessary mounting hardware included
• Manufacturer Part Number: YHC50008

Fits select 1971-2015 Chevrolet, Dodge, Ford, and GMC trucks equipped with a Dana Spicer 60 front axle and 35-spline outer stubs.

The Yukon Gear Hardcore Drive Flange Kit (MPN: YHC50005) is engineered for serious off-road use where traditional manual locking hubs are the weak link. By replacing internal manual hubs with these high-strength drive flanges, you ensure permanent engagement and maximum torque transfer to your front wheels. This kit is a critical upgrade for rock crawling and heavy-duty trail applications where drivetrain reliability is paramount.

• Fits Dana Spicer 60 front axles with 35-spline outer axle shafts
• Includes two high-strength drive flanges
• Includes two Yukon engraved caps for a finished, professional look
• Complete with all necessary installation hardware
• Eliminates the failure points of mechanical locking hub assemblies
• Manufacturer Part Number: YHC50005

Fits select 1971-2015 Chevrolet, GMC, Dodge, and Ford 4WD trucks equipped with a Dana Spicer 60 front axle and 30-spline outer axles.

The Yukon Hardcore Drive Flange Kit is engineered for extreme off-road applications where manual locking hubs are the weak link in the drivetrain. Designed to replace internal manual locking hubs, this kit provides a permanent, fixed connection between the outer stub axle and the wheel hub. This eliminates the risk of hub failure or unintentional disengagement during high-torque scenarios such as rock crawling or competition use.

Constructed for maximum durability, these flanges ensure your drivetrain remains fortified against the stresses of oversized tires and harsh terrain. This specific kit features non-engraved caps for a clean, understated look at the wheel hub.

• Manufacturer Part Number: YHC50004
• Axle Fitment: Dana Spicer 60
• Spline Count: 30-Spline Outer Stubs
• Cap Finish: Non-Engraved
• Included Hardware: Two (2) drive flanges, two (2) caps, and all necessary mounting hardware

Fits select 1971-2015 Chevrolet, Dodge, Ford, and GMC trucks equipped with a Dana Spicer 60 front axle and 30-spline outer stubs.

The Yukon Gear Hardcore Drive Flange Kit (YHC50003) is engineered for extreme off-road environments where traditional manual locking hubs often fail. By replacing internal locking mechanisms with solid drive flanges, this kit provides a fail-safe connection that ensures constant engagement and maximum power delivery to the wheels. It is the ultimate upgrade for rock crawlers and heavy-duty trail rigs that demand absolute drivetrain reliability.

• Increased Strength: Eliminates moving internal hub components to provide a more robust connection for high-torque applications.
• Solid Engagement: Perfect for dedicated off-road vehicles that require permanent front-axle engagement.
• Premium Aesthetics: Features signature Yukon engraved caps for a clean, professional finish.
• Technical Spec: Compatible with Dana Spicer 60 front axles featuring 30-spline outer axle shafts.

Kit Includes: (2) Drive Flanges, (2) Yukon Engraved Caps, and all required installation hardware.

Fits select 1968-2006 American Motors and Jeep vehicles including Wrangler, Cherokee, and Grand Cherokee with AMC Model 35 rear axles, 27-spline shafts, and 3.54 or higher gear ratios.

The Yukon Gear Grizzly Locker is a mechanical positive-locking differential designed for extreme traction in rock crawling, off-road racing, and trail use. This unit provides 100% power to both tires simultaneously while maintaining the ability to disengage for smoother navigation through turns. Engineered to withstand catastrophic axle failure and heavy shock-loading, it features a patented internal design with inner clutch teeth that utilize a larger radius at the base, offering up to 350% greater strength than traditional back-cut designs.

• Fits AMC Model 35 (Dana 35) axles with 27-spline shafts
• Compatible with 3.54 and numerically higher gear ratios
• Forged 8620 steel internals for maximum component lifespan
• Patented design reduces common mechanical locker failures
• Assembled in the USA
• Manufacturer Part Number: YGLM35-4-27

Fits select 1980-2014 Buick, Cadillac, Chevrolet, and GMC vehicles with GM 8.5" or 8.6" differentials and 30-spline axles.

The Yukon Grizzly Locker (YGLGM8.5-3-30) is a high-strength mechanical positive-locking differential designed for extreme traction in off-road racing, drag racing, and technical trail environments. This locker provides 100% power to both tires under load while maintaining the ability to disengage during turns for streetability. Engineered to handle the shock-loading of catastrophic axle failures, it features a patented internal design that utilizes a larger radius at the base of the inner clutch teeth, offering significantly higher strength compared to traditional back-cut designs.

• MPN: YGLGM8.5-3-30
• Axle Compatibility: GM 8.5-inch and 8.6-inch
• Spline Count: 30
• Gear Ratio: 2.73 and up numerically
• Materials: 8620 steel internals for maximum durability
• Design: Patented internal mechanism reduces common locker failures
• Manufacturing: Assembled in the USA

The Yukon Gear Grizzly Locker (YGLGM14T-30) fits select 1967-2015 Chevrolet and GMC trucks, vans, and SUVs equipped with the GM 10.5-inch 14-bolt rear differential and 30-spline axles.

Engineered for extreme performance in rock crawling, trail running, and drag racing, the Grizzly Locker is a mechanical positive-locking differential that delivers 100% power to both tires. This unit is designed to install directly into a standard open carrier, replacing factory spider gears with heavy-duty internals capable of handling massive shock-loading. The patented design allows for disengagement during turns while maintaining maximum traction in a straight line.

Construction features high-strength 8620 steel internals for long-term durability. The inner clutch teeth are engineered with a larger radius at the base, providing up to 350% greater strength compared to traditional back-cut designs. This added material helps prevent breakage even during catastrophic axle failures, making it one of the most reliable mechanical lockers on the market.

• Fits GM 10.5" 14-bolt truck differential with 30-spline axles
• Installs into standard open carrier
• High-strength 8620 steel internals for added durability
• Patented internal design reduces common locker failures
• Assembled in the USA
• Manufacturer Part Number: YGLGM14T-30

Fits select 2001-2018 Chevrolet Silverado, GMC Sierra, and Dodge/Ram 2500/3500 heavy-duty trucks with the 11.5-inch rear axle and 30-spline shafts.

The Yukon Gear Grizzly Locker (YGLGM11.5-30) is a mechanical positive-locking differential engineered for extreme traction in high-torque environments like rock crawling, trail running, and drag racing. This unit provides 100% power to both tires for maximum straight-line performance while allowing for necessary disengagement during cornering. Built with high-strength 8620 steel internals, it features a patented design where the inner clutch teeth utilize a larger radius at the base to offer up to 350% greater strength compared to traditional back-cut designs.

• Specifically designed for GM and Chrysler 11.5" rear ends with 30-spline axle shafts
• High-strength 8620 steel internals for durability under shock-loading
• Patented internal design minimizes common locker failures and resists breakage
• Provides mechanical locking for 100% power delivery to both wheels
• Assembled in the USA
• Manufacturer Part Number: YGLGM11.5-30

Fits select 1955-1988 Ford, Lincoln, and Mercury vehicles equipped with the Ford 9-inch rear differential and 35-spline axles.

The Yukon Grizzly Locker is a heavy-duty mechanical positive-locking differential engineered for high-torque applications including rock crawling, off-road racing, and drag racing. This unit delivers 100% of available power to both drive wheels under load, yet allows for the necessary disengagement to negotiate turns on the street. The patented internal design specifically addresses common failure points by utilizing a larger radius at the base of the clutch teeth, providing up to 350% more strength than traditional back-cut designs.

Constructed with forged 8620 steel internals, this locker is built to survive shock-loading and extreme stress. It provides the reliability required for competition-level performance while maintaining predictable operation for trail and street use.

• Fits Ford 9" housings with 35-spline axle shafts
• Forged 8620 steel internals for superior durability
• Patented design reduces common locker failures and resists breakage
• Provides 100% traction to both wheels with automatic disengagement for cornering
• Assembled in the USA
• Manufacturer Part Number: YGLF9-35

The Yukon Gear Grizzly Locker is a heavy-duty mechanical positive-locking differential engineered for maximum traction in the most demanding environments. This 31-spline unit replaces the standard factory differential internals to provide 100% power to both drive wheels, ensuring consistent performance for rock crawling, off-road racing, and drag racing applications while still allowing for disengagement during cornering.

Constructed with high-strength 8620 steel internals, the Grizzly Locker (MPN: YGLF8.8-31) features a patented design that specifically addresses common failure points found in other lockers. The inner clutch teeth are engineered with a larger radius at the base, providing up to 350% greater strength than traditional back-cut designs. This reinforced tooth profile is built to withstand extreme shock-loading and protects against catastrophic axle failure.

• Fits Ford 8.8-inch differentials with 31-spline axles
• Mechanical positive-locking action delivers 100% power to both tires
• Forged 8620 steel internals for superior durability and lifespan
• Patented tooth design offers 350% more strength than back-cut alternatives
• Assembled in the USA
• Ideal for 4WD trail running, rock crawling, and high-performance street/strip use
• Manufacturer Part Number: YGLF8.8-31

Fits select 1985-2015 Ford F-150, F-250, F-350, Excursion, and E-Series trucks and vans with 10.25-inch or 10.5-inch rear differentials. This Yukon Grizzly Locker is a mechanical positive-locking differential engineered for the most demanding applications, including rock crawling, trail running, and drag racing.

Constructed with high-strength 8620 steel internals, the Grizzly Locker delivers 100% power to both wheels for maximum traction while still allowing for necessary disengagement during cornering. Its patented internal design features clutch teeth with a larger radius at the base, offering up to 350% greater strength than traditional back-cut designs. This robust architecture resists breakage caused by extreme shock-loading or axle failure, providing a significant reliability upgrade over standard lockers.

• Fits Ford 10.25-inch and 10.5-inch differential housings
• 35-spline configuration for heavy-duty axle applications
• Forged 8620 steel internals for superior durability
• Patented design reduces common mechanical locker failures
• Assembled in the USA
• Manufacturer Part Number: YGLF10.25-35