Speedmaster Ford 9" 28 Spline 3.25:1 Ratio Ring and Pinion Gears Set 8620

The Speedmaster Ford 9" 28 Spline 3.25:1 Ratio Ring and Pinion Gears Set is a complete gear pair engineered for Ford 9-inch differential applications. Machined from 8620 steel for durability and strength, this ring and pinion set delivers the specified 3.25:1 gear ratio to match your drivetrain requirements and maintain proper vehicle performance across a range of driving conditions.

Ideal for differential rebuild, restoration, or performance upgrade projects, this 28 spline configuration ensures secure, reliable engagement within compatible Ford 9-inch housings. Whether you're rebuilding a classic muscle car, restoring a vintage pickup, or upgrading a street rod, this precision gear set provides the foundation for smooth, consistent power delivery and optimized engine-to-wheel efficiency at your chosen ratio.

Key Features & Benefits

• 8620 Steel Construction: Forged from 8620 steel for proven durability and impact resistance in high-stress differential applications.
• 3.25:1 Gear Ratio: Delivers the specified numerical ratio for balanced performance across standard driving scenarios.
• 28 Spline Design: 28 spline configuration ensures proper fitment and engagement in compatible Ford 9-inch differentials.
• Ford 9" Compatible: Engineered specifically for Ford 9-inch differential housings, a proven platform across muscle cars, trucks, and street rods.
• Complete Ring and Pinion Set: Includes both ring gear and pinion gear as a matched pair, ready for differential assembly.

Specifications

Ideal Applications

• Ford 9-inch differential rebuild and restoration projects
• Street rod and classic car drivetrain upgrades
• Vintage truck differential replacement and modernization
• Performance or ratio-matched drivetrain modifications