OSGIKEN TR SERIES TWIN PLATE CLUTCH KIT FOR HONDA CIVIC TYPE-R FK8 K20C TR2CD-FK8

 

OSGIKEN TR SERIES TWIN PLATE CLUTCH KIT FOR HONDA CIVIC TYPE-R FK8 K20C TR2CD-FK8

OS Giken TR Series Twin Plate Clutch Kit for Honda Civic Type R FK8 (K20C1)

FK8 / FK2 - OS Giken STR2C / STR Twin Plate Clutch Set

The OS Giken TR2CD-FK8 (HA082-BF5) is one of the most serious clutch upgrades available for the FK8 Civic Type R. 

It is designed for heavily modified K20C1 engines running significantly more power and torque than stock. 

The kit includes a twin-plate clutch assembly and matched flywheel.  

Key Technical Features

Feature	Specification
Clutch Type	Twin Plate
Disc Diameter	215 mm
Disc Design	Solid Hub Metallic
Cover Material	Billet Aluminum
Flywheel	Included
Torque Capacity	Approximately 850 lb-ft (1150 Nm)
Intended Use	High-power turbo, track, drag, time attack
FK8 Compatibility	Direct fit for 2017-2021 Civic Type R

Engineering Advantages

1. Extremely High Torque Capacity

The TR series is designed specifically for turbocharged applications producing very high torque. At roughly 850 lb-ft capacity, it far exceeds the needs of stock or lightly tuned FK8s.  

2. Billet Aluminum Clutch Cover

The lightweight aluminum cover increases clamping force while reducing rotational mass. This improves engine response and allows the clutch to handle repeated track abuse.  

3. Reduced Pedal Effort

Unlike many race twin-disc clutches, OS Giken uses a unique diaphragm spring leverage mechanism that provides high clamp load without an excessively heavy pedal.  

4. Superior Heat Resistance

Twin friction surfaces distribute heat more effectively than a single-plate clutch, making the system suitable for:

• Repeated launches
• Circuit racing
• Time attack
• High-boost tuning

Compared with Other FK8 Clutch Options

Clutch	Power Level	Street Comfort	Track Abuse
OEM FK8	Stock to Stage 1	Excellent	Moderate
Exedy Stage 1	Stage 1-2	Very Good	Good
Exedy Hyper Single	Stage 2-3	Good	Very Good
OS Giken HTR Twin	Stage 3-4	Good	Excellent
OS Giken TR Twin	Stage 4+	Moderate	Outstanding

Based on OS Giken’s own lineup, the TR series sits above the HTR series in torque capacity and is intended for the most heavily modified applications.  

Real-World Community Feedback

Owners commonly describe OS Giken twin-plate clutches as surprisingly streetable despite their power capability. 

Several enthusiasts report smooth engagement and long-term durability, though some note that twin-disc clutches generally require an adaptation period and can be less forgiving in traffic than OEM units.  

The Verdict

For an FK8:

• Stock to 450 hp: Stay OEM or use an upgraded single-disc.
• 450-600 hp: Consider OS Giken HTR Twin or Exedy Hyper Single.
• 600-800+ hp: The OS Giken TR Twin Plate becomes one of the best choices available.
• Dedicated track/time-attack FK8: This clutch is among the highest-end solutions on the market.

If your goal is a 700+ hp K20C1 build with big turbo, aggressive launches, and circuit use, the TR2CD-FK8 is arguably one of the strongest and most durable clutch systems available for the FK8 platform.  

OSGIKEN TR SERIES TWIN PLATE CLUTCH KIT FOR HONDA CIVIC TYPE-R FK8 K20C TR2CD-FK8