Cusco (w/ OEM) LSD Type RS 1.5Way Rear Mazda RX-7 FC3S

This is the Cusco Type RS 1.5-Way Limited Slip Differential (LSD) specifically designed for the rear of your Mazda RX-7 FC3S. If you're looking to significantly improve your car's traction and handling, especially during spirited driving or track use, an LSD is a critical component. It works by distributing torque between the rear wheels, ensuring that power is sent to the wheel with the most grip, which helps prevent wheelspin and improves acceleration out of corners.

The Type RS model from Cusco is a well-known option for performance enthusiasts. Its 1.5-way design means it engages during both acceleration and deceleration. During acceleration, it locks up 100% to provide maximum traction. On deceleration, it partially locks, offering a stable feel and improved cornering stability. This particular unit is designed to work with the OEM differential housing, simplifying installation compared to a full replacement unit. The internal components are made from strong, durable materials to withstand the demands of performance driving. Cusco is a respected name in the aftermarket tuning world, known for producing well-built drivetrain components.

When installing this LSD, it's important to use the correct differential fluid as recommended by Cusco. This ensures proper break-in and longevity of the unit. You'll also want to ensure your rear axle seals and bearings are in good condition, as this is a good time to address any wear. This LSD is a significant upgrade for any RX-7 FC3S owner looking to enhance their vehicle's performance and driving dynamics.