Cusco LSD 386 C15 Type-RS Limited Slip Differential 1.5-Way Front

The Cusco LSD 386 C15 is a Type-RS limited slip differential engineered specifically for Honda Fit manual transmission applications. This front-mounted, 1.5-way LSD delivers enhanced traction and improved cornering performance for both street and motorsport use.

Type-RS Technology:

Unlike conventional cone-spring LSDs, the Type-RS utilizes precision coil springs between the pressure rings to generate initial torque. This design delivers 50-70% lower initial torque compared to cone plate designs, resulting in smoother engagement, reduced friction, and superior throttle response. The coil spring configuration provides more progressive locking characteristics with exceptional sensitivity to throttle inputs, making it ideal for street-driven vehicles and performance applications.

Key Features:

• 1.5-way configuration: activates under acceleration with reduced understeer on deceleration compared to 2-way designs
• Coil spring design provides consistent preload and extends rebuild intervals
• High-tensile forged chromoly side gears, pinion gears, and case for extreme durability
• Cusco Oil Through System enables optimal oil circulation and cooling
• Adjustable pressure ring with two ramp angle positions for tuning
• Radially-cut clutch plate grooves for instant oil movement and improved efficiency
• Lower clutch plate wear and reduced chattering compared to conventional LSDs
• Proven competition-capable in All Japan Gymkhana Championship

1.5-Way Application:

The 1.5-way design is ideal for front-wheel-drive and AWD front axle applications. It activates under acceleration to maximize traction while providing less locking on deceleration than a 2-way differential, helping drivers who struggle with understeer maintain better corner entry balance.

Performance Benefits:

The Type-RS delivers highly reactive operation with low resistance, resulting in better clutch response, improved pedal feel, enhanced durability, and minimal clunking noise. The lower initial torque setting enables smooth turning even when the LSD mechanism is not fully activated, while the coil spring design ensures overall gentle and stable operation perfect for street use and spirited driving.

Note: Requires LSD-specific gear oil for optimal performance and longevity. Professional installation recommended.