The New OS Giken STR series can handle up to 550hp, yet retains drivability very close to standard with 30% lighter pedal effort than most multi-plate clutches. By using special new plate and diaphragm designs, OS Giken has achieved ample power handling with just 715kg clamping pressure. This makes the STR series perfect for everyday driving applications, along with most race and drift applications. For drag racing applications, please refer to our competition twin plate line-up. The clutches come complete with lightweight chrome-moly flywheel, ruby red-anodised billet aluminium clutch cover and the required bearing/carrier set or pull-push converter kit where required.