Cusco RS Rear LSD 1.5-Way – Mitsubishi Lancer Evolution 7–9 RS (Non-AYC)

The Cusco RS 1.5-Way Rear LSD is a proven performance upgrade for Mitsubishi Evolution 7, 8, and 9 RS models without AYC. Trusted in motorsport environments such as the All Japan Gymkhana Championship, the Cusco RS has demonstrated long-term durability and performance without requiring rebuilds during a full race season.

Featuring advanced clutch pack technology, this LSD delivers up to 70% lower initial torque compared to conventional cone plate designs. The result is reduced drivetrain friction, improved throttle response, and smoother engagement. This lower resistance also means reduced wear on internal components and less chattering during normal street use.

The 1.5-way configuration offers lock-up under acceleration with reduced understeer during deceleration, making it ideal for aggressive street driving and motorsport applications alike.

Key Features:
– 1.5-way LSD for optimal balance under throttle and braking
– Proven motorsport durability with minimal maintenance
– Low initial torque reduces drivetrain drag
– Smooth oil flow for consistent LSD performance
– Precision springs maintain stable pressure and engagement
– Minimal clutch plate wear compared to cone-type LSDs
– Reduced LSD chattering for street usability

Fitment:
Mitsubishi Lancer Evolution 7 RS
Mitsubishi Lancer Evolution 8 RS
Mitsubishi Lancer Evolution 9 RS
(Non-AYC models only)

What’s Included:
– 1 × Cusco Type RS Rear Differential

Resources:
Download Installation Instructions

Collection:
Browse more Cusco products