Description

The CUSCO LSD (Limited Slip Differential) is a high-performance, competition-proven differential system engineered to maximize traction, acceleration, and cornering performance for the GR Yaris. Designed to replace the factory differential, CUSCO’s mechanical LSDs provide predictable and aggressive lock-up characteristics, allowing drivers to fully exploit the vehicle’s power and chassis potential on track, during spirited driving, and in competitive environments.

Product Highlights

🏁 Competition-Proven Mechanical LSD Design
Utilizes a durable, multi-plate clutch-type mechanical limited slip differential, renowned for its consistent, predictable, and aggressive lock-up behavior under power and deceleration.

🔧 Customizable Lock-Up Characteristics
Offers two distinct performance profiles to match your driving style and application:

• 1-Way LSD: Provides lock-up only during acceleration (on-throttle). Ideal for maximizing traction out of corners and for front-wheel-drive applications where throttle-induced understeer needs to be managed.

  • Available Initial Torque (Preload): 3.5° or 4.5°

• 1.5-Way LSD: Provides strong lock-up during acceleration and moderate lock-up during deceleration (on-throttle and on-lift/braking). This helps stabilize the rear end during corner entry and trail-braking, promoting rotation and overall chassis balance.

  • Available Initial Torque (Preload): 3.5°/20° or 4.5°/20°

⚡ Enhanced Traction & Driving Dynamics

• Eliminates Single-Wheel Spin: Power is distributed effectively to the wheel with grip.

• Improves Corner Exit Acceleration: Allows for earlier and harder throttle application.

• Adjusts Vehicle Attitude: The 1.5-Way variant can be tuned to influence corner entry rotation and stability.

🔩 Precision Engineering & Durability
Built with high-grade materials and exacting tolerances to withstand the extreme heat and stress of track use and high-horsepower applications. Designed as a direct replacement for the GR Yaris OEM differential.

Technical Specifications & Product Codes

1-Way LSD:

• Lock-Up Function: Acceleration (On-Throttle) Only

• Available Initial Torque Settings: 3.5° or 4.5°

• Product Code: LSD-1C7-F

• JAN Code: 4996338108777

1.5-Way LSD:

• Lock-Up Function: Strong on Acceleration, Moderate on Deceleration

• Available Initial Torque Settings: 3.5°/20° or 4.5°/20°

• Product Code: LSD-1C7-V15

• JAN Code: 4996338108784

Selection & Application Notes

🔍 Choosing the Right LSD:

• For Maximum Traction & FWD/4WD Applications: The 1-Way LSD is often preferred for its focused on-throttle lock, which prioritizes putting power down.

• For Balanced Performance & RWD/4WD with Rotation Control: The 1.5-Way LSD is favored by many circuit drivers for its ability to help with corner entry stability and mid-corner adjustability while still providing strong exit traction.

⚠️ Professional Installation & Setup Required
Installation is complex and involves differential disassembly. Must be performed by a specialist familiar with differential setup and shimming. Incorrect installation will lead to premature failure or poor performance.

⚙️ Fluid & Break-In Period
Requires specific CUSCO LSD Gear Oil or a high-quality alternative. A proper break-in procedure is mandatory to seat the clutch plates correctly.