OS Giken FD881-HA Super Lock LSD Ford 8.8 Inch IRS 31 Spline Limited Slip Differential

The OS Giken FD881-HA Super Lock Limited Slip Differential represents the pinnacle of drivetrain engineering for Ford 8.8-inch independent rear suspension applications with 31-spline axles. This LSD features a patented pressure ring design that allows for smooth, progressive locking with a spline-through-side-gear design accommodating up to twice as many friction plates as competing designs.

Key Features:

• Houses up to 28 total friction plates for complete 100% lock capability in a progressive, smooth, and quiet manner suitable for both street and racing performance
• All components are chemically heat treated and constructed from high-grade steel alloy with raw-forged gears for maximum strength and durability
• LSD case is machined from a single billet piece to ensure uniformity
• Clutch disks are precision-machined simultaneously on both sides to extremely tight tolerances resulting in minimal warpage
• Relief cut-out for cone spring results in minimal degradation and enhanced durability
• Low preload specification while retaining fully progressive 100% lock capability

Specifications:

• Application: Ford 8.8" Independent Rear Suspension (IRS)
• Spline Count: 31 Spline
• Ramp Angles: 25/35 (1.5-way)
• Lock Timing: 336
• Total Plates: 20
• Preload: 10S

OS Giken offers additional in-house tuning services for high-power applications, with the ability to adjust differential action timing to achieve maximum traction. Custom tuning options include adjustable initial torque via cone spring thickness, lock progression timing adjustments, customizable ramp angles, and optional TCD spec disks for increased oil cooling.