Cusco LSD RS-1.5way AE86 ZENKI Levin/Trueno

The Cusco RS 1.5-way limited slip differential is built with a unique clutch disc design that offers a notable change in how your AE86 Levin or Trueno handles. This differential is specifically tuned for the 1985 Toyota Corolla, providing a significant improvement in traction during both acceleration and deceleration.

This RS model uses a clutch system that engages differently depending on whether you're accelerating or decelerating. Under acceleration, it acts like a 2-way LSD, locking up to send power to both rear wheels and maximizing grip. When you lift off the throttle or brake, it transitions to a 1.5-way action, meaning it still offers some locking effect but allows for more controlled rotation. This design is favored by many for its predictable behavior during cornering, helping to reduce understeer and improve turn-in response. The internal components are well-made to handle the stresses of spirited driving, ensuring consistent performance over time.

Installation of a limited slip differential typically involves removing the rear axle housing and replacing the factory open differential. It's a job that requires specific tools and a good understanding of drivetrain components. Because this is a specialized performance part, it's often paired with upgraded suspension components to fully take advantage of the improved traction it offers. Ensure you have the necessary seals and gear oil for installation, as these are not always included.