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Yukon Gear Kits for front and rear gear changes

Yukon Gear Kits®

Yukon Gear Kits provide all the parts you need for your front and rear end gear changes, all in one perfect package. Why spend time matching four individual part numbers when Yukon Gear & Axle has created the perfect kits in a single part number. These kits contain all the gears, bearings, and small parts needed to fully rebuild a differential for your four-wheel drive. Yukon provides Gear Kit Package ratios from 3.73 to 5.38. Let Yukon pair the right high-quality gears with best quality kits you can buy, all in one simple selection.

Yukon’s engineers use state-of-the-art design and testing processes, backed by two in-house quality assurance labs, to ensure each gearset meets exacting specifications dimensionally, for hardness via heat-treating, and torsional strength. Proven in the most demanding forms of motorsports like extreme off-roading in Ultra4 Racing. Be rough on your drivetrain, dominate the road, and have the peace-of-mind that by choosing the #1 aftermarket product you’ve ensured you’ll get the most out of your vehicle’s performance.

Yukon Master Overhaul kits give you all the high-quality parts you need to start & finish every differential job. Yukon offers more tailor-made kits than any other manufacturer in the industry to meet your specific installation needs. This kit uses Timken bearings and races along with high quality seals and small parts. Included in this kit are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable), thread locking compound, marking compound with brush, and gasket. Yukon Master Overhaul kits are the most comprehensive and complete kits on the market. Yukon does extensive research to ensure that every kit is specially tailored to your application.

When you pair the highest quality aftermarket gears with the most complete tailor-made Master Installation Kits, you’ll find the exact match for your front and rear gear installation project. Make it easy on yourself with front and rear end gears and the best kits on the market. Choose Yukon.

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Designed and engineered for off road performance, the Spartan Locker is the toughest lunchbox locker on the market!

  • 9310 steel construction 
  • Chromoly drivers for added strength 
  • Heat treated and precision cut teeth 
  • Heavy duty cross pins (applicable fits) 
  • Large pins and springs 
  • Eliminates thrust washers/shims

Installation of a lunchbox locker is much simpler than full carrier lockers, which require complete disassembly and reassembly of the differential.

Spartan Lockers feature a unique pin and spring design to allow for an even easier ‘drop-in’ install vs. other lunchbox lockers.

Because of its aggressive locking action the Spartan is not recommended for vehicles that see regular ‘daily driver’ usage.

For vehicles with tires larger than 32″ it is recommended to go with a full differential locker.


What are some of the most popular positraction features, and which one is right for you?

When looking for great off-road traction an aggressive positraction is one of the most popular ways to go. But, when driving on the street every day that great off-road posi may be annoying.  Read more on which positraction unit is best for you.