S&S Truck Parts D30488R Dana 30 Ring and Pinion Set 4.88 Ratio Reverse Rotation

The S&S Truck Parts D30488R is a 4.88 ratio ring and pinion gear set designed for the Dana 30 front differential in reverse rotation (high pinion) applications. This aftermarket replacement gear set restores proper drivetrain function and is an ideal upgrade for vehicles running larger tires that require a numerically higher gear ratio to recover lost performance and acceleration.

The 4.88 gear ratio provides increased torque multiplication, making it a popular choice for off-road builds and lifted vehicles. The reverse rotation design is compatible with high-pinion Dana 30 front axles commonly found on a variety of 4x4 applications.

Key Specifications:

• Gear Ratio: 4.88
• Differential Application: Dana 30 Front Axle
• Rotation: Reverse (High Pinion)
• Ring Gear Diameter: 7.125"
• Pinion Spline Count: 26-spline
• Ring Gear Bolts: 10-bolt pattern
• Construction: High-strength forged steel

This ring and pinion set is precision-engineered to deliver reliable performance in both street and off-road conditions. Proper installation with a compatible master overhaul or install kit is recommended for best results.