Speedmaster Ford 9" 28 Spline 6.43:1 Ratio Ring and Pinion Gears Set 8620

The Speedmaster Ford 9" 28 Spline 6.43:1 Ratio Ring and Pinion Gears Set (PCE211.1110) is a precision-engineered gear pair designed for Ford 9-inch differentials. Manufactured from 8620 steel, these gears deliver the strength and durability required for performance and high-load applications. The 6.43:1 ratio provides optimized gear reduction for improved acceleration and torque multiplication, making this set ideal for street performance, drag racing, and off-road driving where aggressive gearing is needed.

This ring and pinion set features a 28-spline interface, ensuring secure engagement with compatible Ford 9-inch differential housings. The 8620 steel construction resists wear and fatigue under sustained stress, critical for applications involving repeated high-torque cycles. Installation requires proper setup and backlash adjustment to ensure smooth operation and longevity. Whether you're building a performance hot rod, upgrading an existing differential, or preparing for track use, this precision gear set provides the ratio and durability necessary for demanding driving conditions.

Key Features & Benefits

• Ford 9" Compatibility: Engineered specifically for Ford 9-inch differential housings with 28-spline configuration.
• 6.43:1 Gear Ratio: Aggressive ratio provides enhanced acceleration and torque multiplication for performance applications.
• 8620 Steel Construction: High-strength alloy steel resists wear, fatigue, and deformation under high-load conditions.
• Precision Ring and Pinion Design: Matched pair ensures smooth meshing and reliable power transfer in the differential.
• Performance-Oriented: Suitable for drag racing, street performance, and off-road driving where aggressive gearing enhances drivability.

Specifications

Ideal Applications

• Performance street driving and hot rod builds requiring aggressive gear reduction
• Drag racing and acceleration-focused competitions
• Off-road driving where enhanced torque multiplication improves traction and climbing
• Differential upgrades for vehicles prioritizing quarter-mile and 0-60 performance