TOMEI Technical Trax Advance 2-Way LSD – 2013-2016 Scion FR-S / 13-20 Subaru BRZ / Toyota 86 & GT86

The TOMEI Technical Trax Advance 2-Way LSD is a clutch-type limited slip differential engineered for consistent lock, predictable traction, and improved control in performance driving environments. Designed for the Toyota 86, Scion FR-S, and Subaru BRZ platform, this LSD helps put power down more effectively while giving the rear end a more connected, confidence-inspiring feel.

With 2-way operation, the differential provides locking action under both acceleration and deceleration. That makes it especially useful for drivers who want improved traction on corner exit and better stability during braking, turn-in, and throttle transitions.

Key Features

• Clutch-Type Limited Slip Differential: Designed for strong, consistent lockup and predictable rear-end behavior.
• 2-Way Operation: Provides locking action under both acceleration and deceleration.
• Improved Traction: Helps distribute power more effectively to both rear wheels.
• Better Corner Entry & Exit Control: Adds stability under braking and confidence when getting back on throttle.
• Performance Driving Focused: Suitable for street, track, autocross, and drift applications.
• TOMEI Engineering: Built for enthusiasts who want a more capable and predictable drivetrain setup.

Why We Like It

A proper LSD is one of the biggest upgrades you can make to the 86/BRZ chassis. The TOMEI Technical Trax 2-Way adds the traction and predictability needed for more aggressive driving, especially if you are drifting, tracking the car, or pushing harder through corner entry and exit.

2-Way LSD Behavior

A 2-way LSD locks during both throttle application and deceleration. Compared to a 1-way or 1.5-way differential, this creates a more aggressive and consistent feel, making it a strong choice for drivers who want maximum control during acceleration, braking, and rotation.

Installation Notes

• Professional installation is strongly recommended.
• Proper backlash, preload, gear contact pattern, and break-in procedure are critical.
• Use manufacturer-recommended differential fluid and follow service intervals.
• Clutch-type LSDs may create additional noise, chatter, or driveline feedback, especially during low-speed turning.

What’s in the Box

• (1) TOMEI Technical Trax Advance 2-Way LSD unit
• Included components per TOMEI kit contents