Speedmaster Ford 9" 28 Spline 4.30:1 Ratio Ring and Pinion Gears Set 8620

The Speedmaster PCE211.1036 is a Ford 9" ring and pinion gear set engineered for high-performance differential upgrades and custom automotive builds. This 28-spline set features a 4.30:1 ratio and is constructed from 8620 steel, a material chosen for strength and durability in demanding driving conditions. The gear design supports increased torque transfer and improved acceleration characteristics typical of competitive and street performance applications.

These Ford 9" gears are ideal for hot rods, muscle cars, drag racing, and high-powered street builds where gear ratio optimization is critical. The 4.30:1 ratio delivers aggressive acceleration and is commonly selected for vehicles prioritizing quarter-mile performance or low-end torque delivery. The 28-spline design ensures secure mounting and compatibility with Ford 9" rear differentials and aftermarket differential housings. Installation requires proper setup tools and technical knowledge of differential assembly, making this a core upgrade component for serious enthusiasts and performance shops.

Key Features & Benefits

• 4.30:1 Gear Ratio: Delivers aggressive acceleration and enhanced torque transfer for performance driving.
• 8620 Steel Construction: Premium material provides strength and durability under high-load conditions.
• 28-Spline Design: Ensures secure fit and compatibility with Ford 9" differentials.
• Ring and Pinion Set: Complete gear package for differential assembly and upgrade.
• Ford 9" Application: Direct fit for Ford 9" rear end housings and compatible differential carriers.

Specifications

Ideal Applications

• High-performance hot rod and muscle car differential upgrades
• Drag racing and quarter-mile competition builds
• Custom street rod rear end assembly
• Aftermarket performance differential installation