USA Standard Ring & Pinion Gear Set For Model 20 in a 4.88 Ratio

This Yukon Gear & Axle ring and pinion gear set features a 4.88 ratio, which is a common choice for vehicles running larger tires, especially for off-road use. The 4.88 ratio means the pinion gear will turn 4.88 times for every single rotation of the ring gear, effectively changing your vehicle's final drive ratio. This helps bring your engine's RPMs back into a more efficient range after installing taller tires, improving acceleration and towing performance.

Yukon Standard gear sets are built to meet or exceed original equipment manufacturer specifications. Each set undergoes strict quality checks to ensure it passes dimensional, material, and fitment testing. This particular set is for the Model 20 differential and is designed to fit a wide range of American Motors, Jeep, and Hummer vehicles from the late 1960s through the mid-1980s, and even into the early 2000s for the Hummer H1.

When installing a new ring and pinion, it's crucial to follow the manufacturer's break-in procedure to ensure proper gear meshing and longevity. This typically involves a period of moderate driving without hard acceleration or heavy loads, followed by an oil change.