Revolution Gear & Axle Chrysler 9.25in Rear 3.90 Ratio Dual Drilled Face Hobbed Ring & Pinion Set

Upgrade the rear differential of your compatible Chrysler vehicle with the Revolution Gear & Axle RGA C9.25-390DCD ring and pinion set. Designed for Chrysler 9.25-inch rear axles with a 3.90:1 gear ratio, this set supports improved drivetrain performance and dependable power transfer for street, performance, and towing applications. The matched ring and pinion gears are manufactured for proper engagement when installed with the correct setup procedures and supporting differential components.
The dual-drilled ring gear is designed to accommodate applicable Chrysler bolt patterns, helping provide installation flexibility across compatible rear axle configurations. Face-hobbing manufacturing technology promotes consistent tooth geometry and precise gear contact, while the 3.90 ratio can help improve acceleration and low-speed pulling performance compared with taller factory gearing. Proper gear selection should be confirmed based on axle type, carrier compatibility, vehicle application, and intended use.
This Revolution Gear & Axle ring and pinion set is intended for automotive differential service and should be installed by a qualified technician using the appropriate bearings, shims, seals, marking compound, and manufacturer-recommended torque specifications. Differential setup requires careful adjustment of backlash, pinion depth, bearing preload, and tooth contact pattern to support quiet operation and long service life. Verify compatibility before installation, as additional components or carrier changes may be required for the selected ratio.

Features:

• Brand: Revolution Gear & Axle

• Part Number: RGA C9.25-390DCD

• Application: Chrysler 9.25-inch rear axle

• Gear Ratio: 3.90:1

• Design: Dual-drilled ring gear for compatible bolt patterns

• Manufacturing: Face-hobbed ring and pinion gears

• Set Contents: Matched ring and pinion gear set

• Installation: Professional differential setup recommended