CUSCO LSD Type-RS (FK8/FL5)

The type-RS LSD (Limited Slip Differential) is designed to engage with low initial torque, preventing power loss and improving lap times, even in low-powered vehicles. It reduces the occurrence of chattering noises, enhances the durability of the clutch plates, and ensures smooth flow of oil between the clutch plates, leading to improved LSD (Limited Slip Differential) performance and oil durability.

Compared to conventional cone plate types, the type-RS LSD has significantly lower initial torque, around 50% to 70% lower than cone plate types. This reduction in initial torque results in lower drive resistance, providing a responsive and smooth operation.

The type-RS LSD offers exceptional durability due to the use of special precision springs (RS springs) between the pressure rings. These springs maintain constant spring stroke, preventing full engagement like in cone plate types, which can lead to wear and deformation of clutch plates. The RS springs generating initial torque have no wear issues, ensuring stable performance.

This durability advantage is demonstrated in motorsports, such as in the All-Japan Gymkhana championship, where vehicles equipped with type-RS LSDs have competed without the need for overhauls. Even at the competition level, it provides outstanding durability.

The type-RS LSD offers high responsiveness because its operation direction aligns with the direction of initial torque. This results in faster engagement and direct response to accelerator input. It efficiently transmits high power to the road surface without slipping, even during intense acceleration from 0 to 400 meters. It maintains stable driving force during extended drifts.

Initial Torque:

Initial torque refers to the torque applied to LSD (Limited Slip Differential) even when it's not actively engaged. Setting it higher can provide stronger LSD effects, but it may reduce turnability and put additional load on the drivetrain.