4.88 Ring & Pinion Gear Set D44 Thick

The Yukon Gear and Axle 4.88 Ring & Pinion Gear Set for Dana 44 Thick carriers delivers the high-ratio performance needed for serious off-road traction and low-speed pulling power. Engineered for Jeep Wrangler JK models (2007–2018), this gear set transforms driveline response in challenging terrain where ground speed control and mechanical advantage matter most. The 4.88 ratio represents a significant step up from stock gearing, providing substantial torque multiplication for rock crawling, sand running, and heavy load scenarios.

The 24-spline pinion design ensures robust power transfer and compatibility with modern JK drivetrain components. The 8.89-inch ring gear diameter is optimized for Dana 44 thick housings, a proven platform in the Jeep community for both factory and heavily modified builds. This gear ratio produces approximately 4.88 engine revolutions per single wheel revolution, dramatically increasing available torque at the wheels while reducing highway cruising speeds—a trade-off serious rock crawlers accept for improved low-speed maneuverability and obstacle-clearing capability.

This is the choice for Wrangler JK owners building or upgrading for extreme terrain, whether tackling technical trails, sand dunes, or steep mountain passes. Weekend wheelers benefit from improved traction during obstacles; serious expedition builders rely on Dana 44 gear sets as part of a comprehensive drivetrain reinforcement strategy. Professional installation by a qualified technician experienced with ring and pinion service is essential for proper backlash adjustment and differential carrier setup.

Upgrading to a 4.88 ratio represents a permanent driveline modification that improves rock-crawling prowess but requires acceptance of increased fuel consumption and engine rpm during highway driving. For Jeep enthusiasts committed to off-road performance over all-around versatility, this Yukon gear set is a foundation component in the build.