Eaton Detroit Truetrac Differential 29 Spline 1.27in Axle Shaft Diameter 3.08 & Up Ratio Rear AMC 20

When you're looking to get the most out of your drivetrain, the Eaton Detroit Truetrac differential is what you get. This package includes the Truetrac helical-gear limited-slip differential itself, designed to work with AMC 20 rear axles. It's built for 29 spline axles with a 1.27-inch shaft diameter and is compatible with ring and pinion gear sets with a ratio of 3.08 and numerically higher. This is a serious upgrade for vehicles like the Hummer H2, Jeep CJ7, and many others that use the AMC 20 rear end.

What makes the Truetrac stand out is its automatic, maintenance-free operation. Unlike clutch-based limited-slip units, it uses a system of helical gears that smoothly transfer torque to the wheel with better traction. This means you get improved acceleration and handling without any special lubrication or friction modifiers needed. It engages automatically, whether you're moving forward or in reverse, and it operates quietly and smoothly, so you don't have to deal with the chatter or harshness sometimes associated with other traction-enhancing differentials. This well-built unit is a popular choice for a wide range of vehicles because it offers a significant improvement in traction without adding complexity.

Installing a Truetrac is a job that requires careful setup to ensure proper gear mesh and backlash, so it's often best handled by a professional mechanic. Once installed, however, you can expect a noticeable difference in how your vehicle puts power down, especially in slippery conditions or during hard acceleration. It's a solid option for anyone looking to enhance their vehicle's performance and capability.