Cusco LSD 137 B Type RS Limited Slip Differential Front 2-Way

The Cusco LSD 137 B is a Type RS clutch-type Limited Slip Differential engineered for the front differential position of the Nissan Skyline GT-R (BNR32, BCNR33, BNR34). Featuring a 45° cam angle and an initial torque rating of 10k–12k N·cm, this unit delivers assertive, predictable locking behavior that is well-suited to spirited street and competitive driving.

Key Features:

• Type RS Coil Spring Design: Activation pressure is applied in the same direction as initial torque via coil springs, enabling smooth and progressive clutch plate engagement from a non-operational to fully functioning state
• 45° Cam Angle: High cam angle setting produces strong locking force under load for confident traction and stability
• 10k–12k N·cm Initial Torque: Firm initial torque setting optimized for performance driving applications
• Cusco Oil Through System: Radially cut clutch plate grooves promote instant oil movement, improving efficiency, reducing heat, and extending service life
• Adjustable Plate Stack: Locking characteristics can be tuned by changing the combination and stacking order of clutch plates without purchasing additional hardware
• Dual Cam Angle Settings: Two different cam angle settings are built into a single unit, allowing the driver to switch responsiveness without buying extra parts
• Chromoly Steel Construction: Casing and gears are manufactured from chromoly steel for maximum strength and durability under competition conditions
• Dish Screw (皿ビス) Assembly: Precision fastener design consistent with Cusco's high-tolerance manufacturing standards

Cusco's Type RS LSD has a proven competition pedigree, having been validated through the All Japan Gymkhana Championship without requiring overhaul throughout a full racing season. The LSD 137 B brings that same engineering to the Skyline GT-R platform, replacing the factory open or viscous differential with a mechanical unit that actively distributes torque to the wheel with greater grip — delivering sharper turn-in response and more consistent power delivery under hard acceleration.