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OS Giken, established back in 1988 and based in Okayama, Japan has a long established history of high performance power source and drivetrain parts.
OS Giken has developed a range of clutches and drivetrain parts from years of racing performance and development of high performance vehicles. Since the first introduction of the OS Giken clutch series in 1983, OS Giken has continued to further research development, now offering a line up with durability and performance second to none.
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