Cusco LSD 193 L15 Type RS 1.5-Way Limited Slip Differential for Lexus IS250/IS350/GS350/GS430

The Cusco LSD 193 L15 is a Type-RS mechanical limited slip differential engineered for rear-wheel drive Lexus applications. This precision-built LSD features a 1.5-way configuration that can be switched to 2-way operation by reversing the internal cam position, providing versatility for different driving styles and conditions.

Advanced Coil Spring Design:

Unlike conventional LSDs that use cone springs, the Type-RS utilizes RS coil springs positioned between pressure rings to create progressive locking characteristics with lower initial torque. This design delivers smoother engagement, improved sensitivity to throttle inputs, and minimal loss of initial torque over time. The coil spring setup allows for customizable preload adjustment by adding or removing springs to suit your specific needs.

Key Features:

• High-tensile forged chromium-molybdenum steel housing, gears, and components for extreme durability
• Metal clutch plates with exclusive radial groove pattern for instant oil movement and improved efficiency
• Oil Through System case design maximizes cooling and differential oil circulation
• Polished pressure ring contact surfaces ensure even, consistent clutch plate engagement
• Two ramp angle positions on pressure rings allow tuning for different track conditions
• 1.5-way configuration ideal for street and track use with reduced understeer on deceleration
• Switchable to 2-way for aggressive drift and rally applications

Application Notes:

This differential is designed for Lexus IS250, IS350, GS350, and GS430 models with automatic transmissions and rear differential positions. Compatible with 2GR-FSE and 3UZ-FE engines. Genuine oil seals required for installation (not included). Requires LSD-specific differential oil for optimal performance and longevity.

The Type-RS is ideal for high-performance street vehicles, offering smoother operation and longer service intervals compared to traditional cone-spring LSDs, while maintaining the precision and reliability Cusco is known for in motorsports competition.