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Race-Grade Twin Plate Clutch Engineering for the Honda Civic Type R
The OS Giken HA082-BR5 HTR Series Twin Plate Clutch is a purpose-built performance clutch system designed to handle extreme power output and sustained track abuse in the 2017 to 2021 Honda Civic Type R FK8. OS Giken's HTR twin plate design dramatically increases clamping force and friction surface area over single-disc solutions, enabling reliable power transfer under full boost and repeated high-rpm shifts without clutch fade. The HA082-BR5 is a direct-replacement performance upgrade that retains factory bell housing compatibility while delivering race-level torque capacity for built FK8 engines.
Key Features
- Twin plate design doubles friction surface area for superior torque capacity
- OS Giken high-friction organic clutch disc material for street and track use
- Includes matching flywheel for optimized rotational inertia balance
- Direct OEM bell housing fitment on FK8 platform
- Engineered for high-boost K20C1 engine builds
- Race-proven construction from OS Giken Japan
- Progressive engagement characteristic suitable for street and competition use
Vehicle Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2017-2021 | Honda | Civic Type R | FK8 |
Specifications
| Detail | Value |
|---|---|
| Part Number | HA082-BR5 |
| Brand | OS Giken |
| Clutch Type | Twin Plate |
| Series | HTR |
| Fitment | 2017-2021 Honda Civic Type R FK8 |
| Disc Material | High-Friction Organic |
| Includes Flywheel | Yes |
| Condition | New |
| UPC | N/A |
What's Included
- OS Giken HA082-BR5 HTR twin plate clutch assembly
- Matching OS Giken flywheel
- Pressure plate and disc set
- Required hardware and installation components
About OS Giken
OS Giken is a Japanese precision engineering company with decades of experience developing limited-slip differentials, clutch systems, and engine components for motorsport applications. OS Giken products are used in professional circuit racing, time attack, and rally competition worldwide, and are trusted by OEM race programs and privateer teams alike for their precision and durability.
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Frequently Asked Questions
What is the HA082-BR5?The HA082-BR5 is the OS Giken HTR Series Twin Plate Clutch system designed specifically for the 2017 to 2021 Honda Civic Type R FK8. It replaces the factory single-disc clutch with a twin plate setup that offers dramatically increased torque capacity and heat resistance for track and high-power street builds.
Does the HA082-BR5 include a flywheel?Yes. The OS Giken HTR Series clutch kit for the FK8 includes an OS Giken matched flywheel to ensure proper balance and engagement characteristics. Purchasing the clutch and flywheel as a matched system is recommended for optimal performance.
Is the OS Giken HA082-BR5 streetable for daily driving?The HA082-BR5 uses a high-friction organic disc compound that provides progressive engagement, making it more streetable than pure metallic race clutches. Some users daily drive on this clutch, though engagement is heavier than stock and requires adjustment in city traffic conditions.
What power level can the HA082-BR5 twin plate clutch handle?The twin plate design significantly exceeds the factory clutch torque rating and is suitable for heavily modified FK8 builds with upgraded turbos and engine internals. Consult OS Giken's published torque ratings for your specific application before ordering.
Does the HA082-BR5 fit the standard FK8 bell housing without modification?Yes. The OS Giken HTR clutch is engineered as a direct-fit replacement for the FK8 transmission, retaining OEM bell housing and starter motor compatibility without requiring custom adapters or machining.
How does the OS Giken HTR twin plate compare to a stage 3 single disc clutch for the Civic Type R?The HTR twin plate design offers higher torque capacity and greater thermal resistance than most single-disc stage 3 solutions by using two friction surfaces rather than one. This makes the HA082-BR5 better suited for sustained track sessions and repeated power launches without heat fade.
What is the clutch pedal feel like with the HA082-BR5 installed?Pedal effort is noticeably heavier than the stock Civic Type R clutch due to the higher clamping pressure required for twin plate engagement. Most performance drivers find this acceptable for track-focused vehicles.
Is OS Giken a reputable brand for clutch systems?OS Giken is a well-respected Japanese manufacturer with an extensive motorsport pedigree. Their twin plate clutch systems are used in Super GT, Formula D, and global time attack competition, making OS Giken one of the most trusted names in the performance clutch market.
Installation Instructions
- Disconnect the battery and support the vehicle safely on jack stands.
- Remove the transmission following Honda FK8 service manual procedures.
- Remove the factory clutch, pressure plate, and flywheel from the crankshaft.
- Install the OS Giken flywheel and torque to Honda factory specification.
- Install the OS Giken HA082-BR5 twin plate assembly using the supplied alignment tool.
- Reinstall the transmission and torque all fasteners to specification.
- Reconnect the clutch hydraulic line and bleed the system if required.
- Reconnect the battery and perform a clutch break-in procedure per OS Giken guidelines.
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