Cusco LSD 181 F2 Type RS Rear Limited Slip Differential 1-Way & 2-Way Switchable

The Cusco LSD 181 F2 is a high-performance Type RS Limited Slip Differential designed for rear axle installation in select Subaru Impreza and Legacy models equipped with the R160 differential. This switchable unit allows drivers to configure the differential as either a 1-way or 2-way LSD, providing versatility for different driving conditions and applications.

Type RS Spring Technology:

• Utilizes coil springs positioned between pressure rings to develop initial torque smoothly and progressively
• Springs absorb initial torque for gentler engagement compared to traditional cone-plate LSDs
• Reduces differential noise and chattering while improving durability
• Lower power loss translates to better acceleration and improved lap times

Construction and Materials:

• High-tension chrome-molybdenum steel housing and gears built for competition use
• Large oil windows promote increased flow for better cooling and lubrication
• Cusco's proprietary groove-cut technology on clutch plates enhances efficiency
• Oil-through design ensures positive pressurized flow throughout the differential system

Switchable Configuration:

• 1-Way Mode: Activates under acceleration, functions as open differential during deceleration - ideal for reduced understeer
• 2-Way Mode: Engages during both acceleration and deceleration - recommended for aggressive driving and drift applications
• Easy conversion between configurations through clutch pack reordering

Technical Specifications:

• Part Number: LSD 181 F2
• Position: Rear
• Differential Size: R160 (C-Size)
• Cam Angles: 55/0 degrees (1-way) or 55/55 degrees (2-way)
• Initial Torque: 5-7 kg-m

The Cusco Type RS LSD represents decades of limited-slip differential development, offering street enthusiasts and track competitors a proven solution for maximizing traction and vehicle control. The spring-based design provides consistent pressure distribution across friction plates, extending component life while delivering predictable, progressive engagement characteristics that drivers can rely on.