Speedmaster Ford 9" 35 Spline 3.89:1 Ratio Ring and Pinion Gears Set 8620

The Speedmaster Ford 9" 35 Spline 3.89:1 Ratio Ring and Pinion Gears Set (PCE211.1043) is a precision-engineered differential gear assembly designed for Ford 9-inch rear axles. Built from 8620 steel, this ring and pinion set delivers the durability and strength needed for street, strip, and performance driving applications where reliable power transfer is critical.

With a 3.89:1 ratio, this gear set optimizes acceleration and low-end torque delivery for improved launch performance. The 35-spline design ensures secure engagement with compatible driveshafts and carrier assemblies. Whether upgrading for higher horsepower applications, improving off-the-line response, or rebuilding a worn differential, this Speedmaster gear set provides the quality and precision fit that Ford 9-inch enthusiasts demand.

Key Features & Benefits

• 35 Spline Design: Matches OEM Ford 9-inch carrier spline count for direct compatibility and secure power transfer.
• 3.89:1 Gear Ratio: Optimizes torque delivery and acceleration for performance and street driving applications.
• 8620 Steel Construction: High-strength material engineered for durability under demanding driving conditions.
• Ford 9" Application: Precision-engineered for Ford 9-inch differential carriers and rear axle assemblies.
• Ring and Pinion Set: Complete gear assembly ready for differential installation and setup.

Specifications

Ideal Applications

• Street and performance vehicle rear axle upgrades
• Drag racing and strip competition differential assemblies
• Ford 9-inch differential rebuilds and replacements
• Torque-focused driveline tuning for improved acceleration