OS Giken Dual Clutch Kit

2013–2021 Scion FR-S, Subaru BRZ, Toyota 86 2.0L Boxer Engine

TY421-BJ5

Overview:

The OS Giken STR2C Dual Clutch Kit is a high-performance upgrade designed specifically for the Scion FR-S, Subaru BRZ, and Toyota 86 models equipped with the 2.0L boxer engine. This kit replaces the factory clutch system with a robust dual clutch setup, delivering enhanced durability and improved power transfer for spirited driving and track use. Ideal for enthusiasts seeking a more responsive and reliable clutch solution, the STR2C Series 215mm (Soft) kit balances aggressive performance with daily drivability.

Engineered by OS Giken, a renowned name in motorsports and performance drivetrains, this dual clutch kit is tailored to handle increased torque and aggressive driving conditions without sacrificing smooth engagement. It is an excellent choice for drivers upgrading their vehicle’s power output or those who demand a clutch system that can withstand rigorous use.

Key Features:

The OS Giken STR2C Dual Clutch Kit offers a range of advanced features that enhance both performance and reliability:

• Dual clutch design for improved torque capacity and reduced drivetrain shock
• 215mm diameter clutch discs optimized for smooth engagement and consistent grip
• Soft clutch springs to maintain manageable pedal effort for street and track use
• High-quality friction materials engineered for durability and heat resistance
• Precision-machined components ensuring exact fitment and reliable operation
• Designed specifically for the Scion FR-S, Subaru BRZ, and Toyota 86 platform
• Enhanced clutch life under high-performance driving conditions
• Compatible with stock flywheel and transmission setup for straightforward installation

Construction & Design:

OS Giken’s STR2C Dual Clutch Kit is crafted using premium materials and meticulous engineering standards. The clutch discs feature advanced friction compounds that provide excellent grip while resisting fade during extended use. The dual clutch mechanism is designed to distribute load evenly, reducing wear and improving longevity compared to single-plate clutches.

Each component is precision-machined to ensure perfect alignment and smooth operation within the factory transmission housing. The soft spring setup balances pedal feel and engagement firmness, making it suitable for both street driving and occasional track sessions without excessive pedal effort.

Installation & Fitment:

This dual clutch kit is a direct fit replacement for the factory clutch assembly on the Scion FR-S, Subaru BRZ, and Toyota 86 models from 2013 through 2021. Installation requires standard clutch replacement procedures and does not necessitate modifications to the transmission or flywheel. Professional installation is recommended to ensure proper clutch adjustment and optimal performance.

What’s Included

• STR2C Series 215mm dual clutch discs (soft springs)
• Pressure plate assembly
• Release bearing compatible with factory setup
• Installation hardware and alignment tools
• Detailed installation instructions

Ideal For:

The OS Giken STR2C Dual Clutch Kit is ideal for performance enthusiasts and track day drivers who demand a clutch system capable of handling increased power and aggressive driving. It suits owners upgrading their Scion FR-S, Subaru BRZ, or Toyota 86 for enhanced throttle response, improved durability, and consistent clutch engagement under high-stress conditions. This kit is also well-suited for daily drivers seeking a more robust clutch without sacrificing drivability.

OS Giken is a Japan-based performance drivetrain brand best known for race-proven multi-plate clutches and advanced limited-slip differentials like the Super Lock LSD. Built for high-grip, high-load driving, OS Giken components are designed to deliver consistent lockup, durability, and tunability—ideal for track, drift, and serious street performance builds.