Currie Differential Ring and Pinion

Currie Legacy Ring and Pinion: Race-Proven Gear Technology

When it comes to differential ring and pinion gear sets, few names carry more weight than Currie Enterprises. Founded in 1959, Currie has spent over six decades designing, building, and testing drivetrain components for off-road, hot rod, muscle car, and racing applications — and their ring and pinion gear sets represent the pinnacle of that accumulated knowledge.

The Currie Legacy Gear Line

Currie's flagship ring and pinion products fall under the Legacy Gear lineup, engineered for applications ranging from daily-driven Jeeps to full-competition off-road builds. These sets are available for popular platforms including the Dana 44, Dana 60, and the legendary Ford 9-inch — covering both standard and reverse-cut configurations to suit front and rear axle needs alike.

What sets Legacy Gears apart starts at the material level. Forged from 8620 alloy steel, each gear set is precision machined for exact fit and quiet operation, then heat treated to deliver long-term durability under high shock loads. After machining, all Currie Legacy gears are CNC lapped for reduced friction and quieter operation, with each gear hand-dressed to eliminate any burrs on the tooth edges — a detail that measurably improves the break-in process and long-term gear life.

Currie also offers an optional REM ISF® (Isotropic Superfinish) treatment on their ring and pinion sets. This proprietary vibratory finishing process produces a smooth micro-textured surface that reduces friction, improves oil retention, and increases overall gear durability — and as an added benefit, it eliminates the need for the traditional gear break-in procedure.

Gear Ratio Selection and Application

One of the most practical advantages of choosing Currie Legacy ring and pinion sets is the breadth of available gear ratios. Whether you're running lifted tires and need to reclaim lost power, or you're fine-tuning a race build for optimal power delivery, Currie offers a wide selection of numerically low and high ratios to match your specific vehicle setup and driving style. Their 9-inch platform gear sets are available in ratios ranging from 3.00 through 5.83, covering street strip and off-road demands alike.

For builders tackling the Ford 9-inch platform, Currie also offers dyno break-in service on third-member assemblies — spinning the unit for 20 minutes to bring it to operating temperature before it ever hits the road. This level of pre-delivery quality assurance is rare in the aftermarket and reflects Currie's commitment to long-term reliability.

Why Choose Currie Ring and Pinion?

• Forged 8620 alloy steel construction for maximum strength and durability
• CNC lapped gear teeth for reduced friction and quiet operation
• Hand-dressed tooth edges for smoother break-in
• Optional REM ISF® Isotropic Superfinish available on all sets
• Wide ratio selection for Dana 44, Dana 60, and Ford 9-inch applications
• The same gear technology used in Currie's championship-winning competition axle assemblies

Whether you're wheeling a Jeep Wrangler, building a vintage muscle car rear end, or prepping a rig for King of the Hammers, Currie ring and pinion gear sets deliver the precision and toughness the drivetrain demands. Browse the full selection of Currie differential ring and pinion gear sets and find the right ratio for your build.