Cusco LSD 251 F2 Type-RS Limited Slip Differential 1-Way

The Cusco LSD 251 F2 Type-RS Limited Slip Differential is a high-performance mechanical LSD designed for rear-wheel drive vehicles equipped with VQ35DE engines and 6-speed manual transmissions. This 1-way configuration is engineered to replace factory viscous differentials with a precision-crafted racing-grade unit built for both street performance and competition use.

Type-RS Technology:

The Type-RS design utilizes a unique coil spring activation system that sets it apart from traditional cone plate LSDs. The RS springs are positioned inside the pressure rings, applying constant pressure to the clutch plates in the same direction as the initial torque. This innovative design delivers 50-70% lower initial torque compared to conventional cone plate LSDs, resulting in reduced drive friction, faster response, and smoother engagement even at low torque settings. The spring-loaded design ensures minimal clutch plate wear and maintains consistent performance over time without the plate sticking issues common in cone-type differentials.

Key Features:

• 1-way configuration ideal for rear-wheel drive applications
• Activates under acceleration for improved traction and lap times
• High-tension chrome molybdenum steel construction for maximum durability
• Large diameter multi-plate clutch packs for fast, smooth engagement
• Cusco's exclusive Oil Through System for superior lubrication and cooling
• Radially-cut clutch plate grooves for instant oil movement and efficiency
• RS springs provide adjustable customization options
• Proven competition-tested durability in All Japan Gymkhana Championship
• Low chatter operation for comfortable street driving
• Direct replacement for factory viscous differential

Construction & Durability:

Manufactured entirely in Japan using Cusco's proprietary chromoly steel technology, this LSD features large oil windows throughout the casing to promote optimal fluid flow and heat dissipation. The pressure ring contact surfaces are precision-polished for even clutch plate engagement, while the exclusive groove cut technology maximizes clutch efficiency and longevity. The Type-RS design has proven capable of full-season competition use without requiring overhaul, making it suitable for both aggressive track use and daily driving applications.

Performance Benefits:

This 1-way LSD significantly improves traction during acceleration by efficiently distributing torque to the wheel with better grip. The lower initial torque setting allows for smooth cornering when the LSD mechanism is not activated, while providing immediate response when power is applied. The result is improved lap times, better standing-start launches, reduced power loss, and enhanced vehicle control through corners.