Cusco LSD 6C1 N2 Type-RS 2-Way Rear Limited Slip Differential

The Cusco LSD 6C1 N2 is a Type-RS 2-Way Rear Limited Slip Differential engineered for maximum traction and performance. Designed and manufactured in Japan, this mechanical LSD delivers high response and exceptional durability, making it equally suited for track days, gymkhana, drag racing, and spirited street driving.

The Type-RS design uses a unique coil spring system integrated into the pressure plate to manage initial torque. Initial torque is 50–70% lower compared to conventional cone plate-type LSDs, resulting in reduced drive friction, improved throttle response, and lower power loss — all translating to faster lap times even on mildly tuned vehicles.

Key Features:

• Type-RS Coil Spring Design: Precision springs set inside the pressure rings absorb initial torque for smooth, stable clutch plate engagement
• 2-Way Operation: Activates on both acceleration and deceleration — ideal for rear-wheel drive applications, aggressive driving, and drifting
• Configurable Settings: Designed so the unit can be overhauled to choose between 1-way, 1.5-way, or 2-way configurations
• Reduced Clutch Chatter: Low pressure on clutch plates minimizes chatter and improves longevity compared to cone-type LSDs
• Oil Through System: Cusco's proprietary oil flow design allows fluid to circulate from the wide end through the pressure rings and clutch plates for efficient, consistent lubrication
• Chromoly Steel Construction: Casing and gears machined from chromoly steel for superior durability and optimized oil flow through enlarged oil openings
• Extended Service Intervals: Reduced clutch plate pressure means less frequent LSD fluid changes and reduced wear over time
• Competition Proven: The Type-RS platform has demonstrated full-season competition durability in the All Japan Gymkhana Championship

The Cusco LSD 6C1 N2 is crafted and 100% tested in-house in Japan, reflecting Cusco's decades of motorsport heritage. This unit is intended for performance and competition use.