Yukon Gear and Axle and Axleboy Off-Road are proud to announce the much anticipated release of Yukon's Dura Grip 4 Spring Positraction differential for Dodge and Chrysler 9.25" rear axles! The 31 spline Yukon Duragrip uses a nodular case and forged 4320 internals for added strength along with composite clutches for high performance and long life. All units are Rebuildable and many offer upgrades to increase aggressiveness for racing applications. Each unit carries a one year warranty against defects.

Currently in stock and shipping from our Washington Distribution Center!

It is a common misconception that 4x4 and traction go hand in hand. The truth is that most 4x4 vehicles send power to the wheels with the least amount of traction once difficult terrain is encountered. The problem is simple – when one of your vehicle’s wheels loses traction, your highway minded factory differential directs all of your vehicle’s power to those spinning wheels. On road, the standard differential allows each of your wheels to turn independently thus eliminating any binding during turns.

Axle Boy has fully trained and equipped four wheel drive specialist that use the latest techniques and equipment to accurately and effectively diagnose siuations like this failed control module in a Ford Explorer. This vehicle also received an overhaul to the rear 8.8 IRS axle and limited slip assembly.

The sweet 1998 Ford Mustang from the 63376 is gaining the best power increase for the money by changing the rear axle gear ratio to 3.73 to 1. This means that the driveshaft will have one more full revolution for each revolution of the tire, getting the power curve into a more usable area. Chris installed the Yukon Gear ring and pinion gearset, Yukon Master install package, Yukon 1541H alloy shafts and Ford Motorsports positraction differential. The gears are set up using Ford's original pinion depth gauge set. We should be seeing fresh black marks, two lanes wide, in the St.