Yukon Gear & Axle YG D30SR-411JK ring and pinion 411 📷

This high-performance ring and pinion gear set is built to upgrade the differential of Jeep JK models using a Dana 30 axle, focusing on durability and predictable behavior under heavy loads. It delivers a 4.11 gear ratio according to the manufacturer and is aimed at drivers who need stronger gearing for off-road use and towing without sacrificing on-road drivability.

Key Points

The set includes matched ring and pinion gears engineered for reduced noise and long life, with manufacturing processes that prioritize precision and strength. Installation requires proper shimming and backlash adjustment to achieve the intended quiet operation, and many installers recommend professional setup to ensure correct pattern and longevity. ⚙️

This gear set is intended for a short reverse pinion configuration, which provides a different contact pattern compared to standard pinions and can affect driveshaft angle and carrier positioning. Consider that the short reverse pinion may not be compatible with every aftermarket differential housing without minor modifications.

Advantages

Materials and machining focus on durability and repeatability, so the gears can stand up to extended off-road stress and higher torque inputs. The matched set approach ensures the ring and pinion teeth are optimized to work together, reducing the chance of premature wear and minimizing gear whine when properly installed. 🚙

A one-year warranty from the manufacturer covers defects in materials and workmanship according to the terms provided, which gives a baseline of assurance for first-line use. Keep in mind that warranty specifics such as coverage limits and required proof of installation are defined by the manufacturer.

Technical Specifications

• Name: Yukon Gear & Axle YG D30SR-411JK
• Gear ratio: 4.11
• Application: Jeep JK Dana 30 short reverse pinion differential
• Warranty: 1 year (manufacturer)
• Configuration: matched ring and pinion gear set

Usage Recommendations

For best results measure and verify axle type and pinion orientation before ordering to confirm fitment. Professional installation and a proper break-in procedure will help stabilize the contact pattern and reduce initial noise. Periodic inspection of gear oil condition and torque on fasteners will extend service life, and consider fluid with the manufacturer-recommended viscosity and additives to support the higher loads encountered in off-road or towing scenarios.