Cusco LSD Type-MZ

2021–2023 Toyota GR Yaris / 2023+ Toyota GR Corolla GZEA14H 1.5-Way Rear Differential

Part #: LSD 1C8 B15

Overview

The Cusco LSD Type-MZ is a high-performance limited slip differential designed specifically for the rear axle of the Toyota GR Yaris (2021 and newer) and GR Corolla (2023+ GZEA14H). Engineered for enthusiasts who demand precise control and enhanced traction during spirited driving, this LSD offers a balanced combination of durability, responsiveness, and smooth operation. Whether you're pushing your vehicle on the track, enjoying aggressive street driving, or tackling challenging corners, the Type-MZ LSD helps optimize power delivery to the wheels, improving handling and stability.

Built with the performance driver in mind, the Cusco Type-MZ LSD provides a linear actuation characteristic that delivers predictable and consistent lockup. This ensures that during aggressive cornering or acceleration, torque is effectively distributed to both wheels, reducing wheel spin and enhancing grip. Its design supports high-powered applications, making it an ideal upgrade for those seeking to maximize their vehicle's performance capabilities while maintaining reliability and ease of use.

Key Features

The Cusco LSD Type-MZ incorporates advanced mechanical features that set it apart from standard differentials. Constructed with high-quality materials and precision engineering, it offers a reliable solution for drivers who want a traditional cone-spring mechanical LSD with modern enhancements. The key features include:

• Classic cone plate spring actuation that provides a linear and progressive lockup characteristic, allowing for smooth engagement and predictable handling.
• Shallower actuation rate from initial lock to full lock, offering a more gradual and controllable lockup that benefits both daily driving and competitive racing.
• Opposing lock vector design that balances initial lock with full lock engagement, optimizing traction during high-load conditions.
• Durable construction with high-strength steel components designed to withstand the rigors of high-performance driving and racing environments.
• Simple yet effective design that emphasizes maximum durability and ease of maintenance, making it suitable for both amateur and professional racers.
• Compatible with the latest Toyota GR models, ensuring a precise fit and seamless integration with your vehicle's drivetrain.

Construction & Design

The Cusco LSD Type-MZ features a robust mechanical design centered around cone-spring technology. Its housing and internal components are crafted from high-grade steel, ensuring longevity and resistance to wear under demanding conditions. The differential employs a classic cone plate spring setup that provides a consistent lockup force, which can be finely tuned to match your driving style or racing requirements.

The design emphasizes simplicity and durability, with precision-machined parts that ensure smooth operation and reliable performance over time. The shallow actuation rate allows for a more linear engagement, reducing sudden lockup that can unsettle the vehicle and instead offering a more predictable and manageable handling experience. This makes the Type-MZ an excellent choice for drivers who want a high-quality LSD that enhances their vehicle's handling without sacrificing everyday drivability.

Performance & Sound

While specific horsepower or torque gains are not provided, the Cusco LSD Type-MZ is engineered to improve traction and cornering performance significantly. By effectively distributing torque between the rear wheels, it reduces wheel spin and enhances grip during aggressive driving or track use. The mechanical operation is designed to be smooth and predictable, providing a confident driving experience without abrupt lockup or noise. Enthusiasts will appreciate the improved handling dynamics and the enhanced driving feel that this differential offers.

Installation & Fitment

The Cusco LSD Type-MZ is a bolt-on upgrade designed for direct replacement of the factory rear differential in compatible Toyota GR Yaris and GR Corolla models. Installation typically requires basic mechanical skills and tools; however, professional installation is recommended to ensure proper setup and adjustment. No cutting or drilling is necessary, and the differential is designed to integrate seamlessly with your vehicle's existing drivetrain components. Tuning or additional modifications are generally not required, making this an accessible upgrade for performance-minded drivers.

• Direct bolt-on replacement for the factory rear differential
• No cutting, drilling, or extensive modifications required
• Compatible with factory mounting points and axles

What's Included

• Cusco LSD Type-MZ limited slip differential assembly
• Mounting hardware and installation instructions

Ideal For

• Performance enthusiasts looking to improve rear traction and handling
• Track day drivers seeking predictable and linear lockup during cornering
• Owners of Toyota GR Yaris and GR Corolla aiming for a durable, high-quality LSD upgrade
• Drivers who prefer traditional cone-spring mechanical LSD operation with modern tuning characteristics

Emissions Note

This product is designed for off-road or racing use only and may not be legal for use on public roads in all jurisdictions. Please check local regulations before installation.