Dana 30 Ring & Pinion 4.88 Ratio

The Dana 30 Ring & Pinion 4.88 Ratio from Motive Gear is a precision differential gear set engineered for off-road vehicles, rock crawlers, and performance builds that demand aggressive acceleration and enhanced torque multiplication. This complete kit serves drivers and enthusiasts who require lower gear ratios to maximize climbing ability, towing capacity, and off-pavement performance. Whether upgrading a Jeep, truck, or specialty 4x4, a 4.88 ratio dramatically improves wheel speed control and engine responsiveness in demanding terrain.

This Dana 30 ring and pinion set features a 26-spline pinion design paired with a 7.125-inch ring gear diameter, delivering the mechanical advantage needed for low-speed torque and hill-holding capability. The 4.88:1 ratio means the driveshaft rotates 4.88 times for every single rotation of the wheels—a substantial increase from factory ratios that dramatically reduces engine RPM required to climb steep grades and navigate rocky terrain. Motive Gear manufactures these components to OEM tolerances and material specifications, ensuring precise mesh geometry, durability under shock loads, and extended service life in high-stress applications.

Off-road enthusiasts, competitive crawlers, and 4x4 truck owners benefit most from this Dana 30 ring and pinion upgrade when traveling at lower speeds and higher engine loads. Installation requires professional differential service—proper bearing preload, backlash adjustment, and ring gear bolt torque are critical to noise-free operation and longevity. Confirm Dana 30 axle compatibility with your vehicle's specifications before purchase; this kit is not suitable for highway-only use at sustained high speeds, as lower ratios increase fuel consumption and engine RPM at cruise.