Cusco LSD 684 L15 Type RS Rear Limited Slip Differential 1.5 Way

The Cusco LSD 684 L15 Type RS Limited Slip Differential delivers enhanced traction and control for high-performance street driving. This rear-mount 1.5-way LSD is specifically engineered for Subaru applications with 5-speed automatic transmissions, offering an ideal balance between performance and daily drivability.

Advanced Type RS Design:

• Coil Spring Activation System: Applies activation pressure in the same direction as initial torque for smoother engagement and lower initial torque settings compared to conventional cone-plate designs
• Reduced Drivetrain Loss: Initial torque is 50-70% lower than traditional LSDs, minimizing power loss while maximizing wheel traction
• Quiet Operation: Produces significantly less chattering noise than conventional limited slip differentials for improved driving comfort
• Enhanced Plate Durability: Radially-cut clutch plate grooves facilitate instant oil movement and cooling, while precision RS springs maintain consistent pressure to prevent plate sticking and wear
• Adjustable Characteristics: RS springs can be customized to tailor locking behavior to your driving style

1.5-Way Configuration: Activates under acceleration while producing less understeer during deceleration compared to 2-way designs. Perfect for drivers seeking improved corner exit traction without excessive deceleration locking.

Competition-Proven Reliability: Successfully used in All Japan Gymkhana Championship competition without overhaul, demonstrating durability under extreme conditions. The polished pressure ring contact surface ensures flat, even contact with clutch plates for long-term performance.

Ideal for street performance enthusiasts looking to upgrade handling and power delivery on low to mid-power vehicles. The Type RS design provides highly reactive response with lower resistance, resulting in better clutch feel and smoother operation than track-oriented MZ-Type differentials.