Cusco LSD 454 C15 Type RS 1.5-Way Limited Slip Differential

The Cusco LSD 454 C15 Type RS is a 1.5-way limited slip differential engineered for serious performance driving. Battle-proven in the All Japan Gymkhana Championship, the Type RS completed a full competitive season without requiring a single overhaul — a testament to its exceptional durability and race-ready design.

Cusco's in-house testing demonstrates that the Type RS delivers initial torque 50–70% lower than conventional cone plate-type LSDs, resulting in reduced drivetrain friction, improved throttle response, and lower power loss throughout the power band.

Key Features:

• Reduced initial torque — 50–70% lower than conventional cone plate LSDs for better response and less drive friction
• Low power loss — improves lap times even in mildly tuned vehicles
• Minimal clutch chatter — engineered for smooth, quiet operation
• Enhanced durability — low-pressure clutch plates reduce wear and deterioration
• Improved oil flow — smoother oil circulation between plates increases LSD efficiency
• Precision coil springs — special springs set within the pressure plate ensure consistent and steady coil movement
• No clutch plate sticking — unlike conventional cone plate LSDs, plates remain separated, minimizing wear

Understanding Cusco LSD Action Settings:

• 1-Way LSD: Engages under acceleration only; acts as an open differential on deceleration. Ideal for front-wheel drive and AWD front axle applications.
• 1.5-Way LSD (this unit): Engages fully under acceleration with reduced locking effect under deceleration compared to a 2-way. The best balance for drivers who want performance without excessive understeer on corner entry.
• 2-Way LSD: Engages on both acceleration and deceleration. Best suited for rear-wheel drive and AWD rear axle applications where aggressive driving and high-angle drifting are desired.

The Cusco Type RS 1.5-Way LSD delivers a proven competition pedigree with street-friendly manners, making it an ideal upgrade for drivers seeking faster lap times and more predictable handling at any power level.