Speedmaster Ford 9 in. Aluminum 28-Spline Helical Gear LSD Third Member Assembly 3.25:1 Ratio

The Speedmaster Ford 9 in. Aluminum 28-Spline Helical Gear LSD Third Member Assembly with 3.25:1 ratio is a precision-engineered differential carrier designed for high-performance Ford 9-inch rear axles. This complete third member assembly features an aluminum construction with helical gear design and limited-slip differential (LSD) capability, delivering smooth power distribution and improved traction under demanding driving conditions. The 28-spline configuration and 3.25:1 gear ratio make it compatible with Ford 9-inch axle housings commonly found in performance and hot rod applications.

Ideal for enthusiasts upgrading or rebuilding their Ford 9-inch rear axle, this assembly provides the strength and efficiency needed for both street and strip use. The helical gear design minimizes noise and vibration compared to spur gears, while the aluminum carrier construction reduces rotating mass for improved acceleration response. Whether you're restoring a classic Ford, building a performance street machine, or preparing for competition, this third member assembly offers reliable power delivery and consistent gear ratios. The LSD design helps maintain traction by distributing power more evenly to both wheels, reducing wheel spin and improving cornering stability.

Key Features & Benefits

• Aluminum Construction: Lightweight aluminum carrier reduces rotating mass for improved performance and acceleration response.
• 28-Spline Design: Precision 28-spline configuration ensures secure engagement and proper fitment in Ford 9-inch axle housings.
• 3.25:1 Gear Ratio: Fixed ratio optimized for balanced power delivery and RPM performance across a range of driving conditions.
• Helical Gear Design: Helical gears provide smoother, quieter operation compared to traditional spur gear configurations.
• LSD Differential: Limited-slip differential distributes power to both wheels for improved traction and cornering stability.

Specifications

Ideal Applications

• Performance street machines and hot rods with Ford 9-inch rear axles
• Classic and vintage Ford restorations requiring upgraded differential components
• Competition and drag racing applications demanding reliable power distribution
• Off-road and high-traction driving where improved wheel grip is essential