OS Giken TR Series Clutch & Flywheel Kit (04+ STI)

The TR Clutch series line-up was designed for vehicles which have substantial increases in engine power. The billet aluminum cover provides a more direct clutch pedal feel, but still maintains ease of engagement due to the unique leverage mechanism of the diaphragm spring to reduce overall pedal effort.

The TR2CD was designed with high power Turbocharged engines in mind. This type of clutch caters toward the heavily modified engines. The dampened hub clutch discs are 215mm in size and are good up to about 800lbs ft of torque reliably. The aluminum cover allows for higher clamping force (increased capacity) and will handle the hard abuse often found at the track.

SKU
SB041-BF6
$2,090.00

 

OS Giken has evolved and grown over the years, building and cementing a reputation as one of the best racing drivetrain parts manufacturers in the world. Officially founded in 1973, the company headquarters and factory are located in Okayama, Japan. All OS Giken parts are 100% manufactured and assembled in Japan, under very strict quality-control guidelines. Production and design capabilities for engine and drivetrain components are OS Giken's specialty, but the company has the ability to design and build just about anything mechanical. As the design, construction, and usage of the automobile evolves, OS Giken looks forward to the challenges presented to find room for improvement!

CLUTCH COVER
Our specially designed clutch cover contains a unique leverage mechanism for the diaphragm spring, resulting in a higher clamping load of the clutch disc(s) while also reducing pedal effort. These diaphragm springs combined with our special OS Giken Release Sleeves provide a much easier to operate clutch.
 
DISCS
We utilize full face metallic clutch plates to achieve high torque capacity from our clutches. This allows for us to use much softer diaphragm springs to achieve equal or better torque capacity compared to our competitors with substantially less pedal effort.
 
CLUTCH HOUSING
Integrated ventilation holes reduce heat generated inside the clutch system and allows for friction plate dust to exit outside the clutch system, thus increasing reliability and safety. Both the clutch housing and flywheel are chemically heat treated to handle extreme conditions. Increased power output typically requires more torque capacity(friction) in order to hold. This often leads to more heat being generated
 
FLYWHEEL
Our hardened steel alloy flywheels provide superior durability and life than aluminum flywheels, which also results in quicker and predictable engine response. We develop our own flywheel design to maximize our design and engineering philosophies into a no-compromise, complete clutch assembly.
Our integrated clutch and flywheel packages increase transmission efficiency and engine response. Our clutches and flywheels are built within strict tolerances and crafted using carefully selected materials to provide the highest quality and durability.

 

Vehicle Fitment

  • 2004+ Subaru STI

 

Included Components

  • Twin Plate Clutch Assembly with Flywheel

 

Installation Notes

  • Requires SB041-ALT
  • Please consult installation guide

  • Requires OEM Pilot Bearing or Bushing

 

NOTE: THIS KIT REQUIRES(NOT INCLUDED!) THE OS GIKEN "MOVE ALT KIT" WHICH REPLACES YOUR STOCK CLUTCH FORK AND SLAVE CYLINDER.

Movement Alteration Kit

"OS Giken supplies a Movement Alteration Kit to allow the use of a push-type clutch on vehicles that are factory equipped with pull-type clutch systems. Please note that the OS Giken Movement Alteration Kit is designed to work with OS Giken clutches, and installation to unintended applications may result in failure of clutch components."

 


warning_symbolWARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to https://www.P65Warnings.ca.gov/passenger-vehicle.

More Information
SKU SB041-BF6
Product Type Drivetrain
Drivetrain Clutches and Flywheels
Brand OS GIKEN
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