Cusco LSD Type RS 2way Rear Mazda RX-7 FC3S/FD3S

This is the Cusco Type RS 2-way limited slip differential (LSD) for the rear of your Mazda RX-7 FC3S and FD3S models. If you're looking to put down power more effectively, especially during spirited driving or track use, an LSD is a critical component. It helps distribute torque between the rear wheels, improving traction and control when accelerating out of corners.

The Type RS is a popular choice because it offers a good balance between performance and daily drivability. It's a 2-way differential, meaning it engages both under acceleration and deceleration. This provides a more stable feel when you're on the throttle and also helps to control the rear end when you lift off or are braking. Cusco uses a unique cone-plate design in the Type RS, which allows for smoother engagement compared to some other LSDs. This design also means it can be adjusted for different levels of lock-up by changing the number of springs and plates, giving you flexibility to tune it to your driving style or track conditions. The unit is well-built with durable materials designed to handle the stresses of performance driving.

When installing an LSD, it's important to use the correct differential fluid, as specified by Cusco, to ensure proper operation and longevity. This unit is designed as a direct replacement for your factory differential, though professional installation is recommended due to the complexity of setting backlash and gear patterns. If you're serious about maximizing the performance of your RX-7's drivetrain, this Cusco LSD is a solid option.