Cusco LSD RS1.5 FC/FD RX7 RX8

The Cusco RS 1.5-way limited-slip differential (LSD) is built with a unique cone clutch system, featuring 1.5-way engagement. This means it applies locking force not only during acceleration but also partially during deceleration, offering a more stable feel during cornering. This design is particularly beneficial for performance driving, helping to put power down more effectively when exiting turns and providing a more predictable response under braking.

Constructed with a durable steel casing and high-strength internal components, this LSD is designed to handle the demands of spirited driving and track use. The 1.5-way action is a popular choice for rotary-powered cars like the Mazda RX-7 (FC and FD generations) and RX-8, as it balances the need for traction during acceleration with a degree of controlled slip during deceleration, which can aid in turn-in. The RS series LSDs are known for their smooth engagement and reduced chatter compared to some other clutch-type differentials, making them a well-built option for drivers seeking improved grip and handling characteristics.

Installation of a limited-slip differential typically involves removing the rear differential housing and replacing the factory open differential with this unit. It's a job that requires specific tools and a good understanding of drivetrain components. For those looking to maximize traction and handling on their RX-7 or RX-8, this Cusco LSD offers a significant upgrade over a stock open differential, providing a more connected feel to the road and improved performance when you need it most.