Performance Eng CSFS70031LW Center Section 7.00 Ratio 31 Spline

The Performance Engineering CSFS70031LW is a complete center section assembly designed for Ford 9-inch rear differentials. This center section features a 7.00:1 gear ratio, making it ideal for applications requiring higher torque multiplication and lower cruising speeds, such as rock crawlers, heavy towing vehicles, and extreme off-road builds.

Key Features:

• 7.00:1 gear ratio for maximum torque multiplication
• 31-spline axle configuration for enhanced strength and durability
• Lightweight (L/W) design reduces rotating mass while maintaining structural integrity
• Ford 9-inch center section fitment
• New construction with precision-matched gears
• Direct bolt-in replacement for standard Ford 9-inch housings

This center section provides a complete gear set solution, allowing for quick differential upgrades without the need to purchase individual components. The 31-spline output is compatible with aftermarket heavy-duty axle shafts designed for high-torque applications.