OS Giken

From Mr. Okazaki's humble beginnings tinkering with motorcycle parts at home, 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.

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711 products

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OS Giken Nissan 350Z/370Z Z33/Z34 (VQ35HR/VQ37HR) Overhaul Kit A (for NS112-BF14) NS112-BF10A
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OS Giken Clutch Overhall Kit B for R3C OS021-CH50B
OS Giken  | MPN: OS021-CH50B
OS Giken Mazda FC3S RX7-RX8 (Push Type) Release Sleeve Assembly MZ101-RSA0K
OS Giken Nissan Skyline RB26DETT R3C Clutch Release Movement Alteration Kit (14-M) NS221-CH50M
OS Giken  | MPN: NS201-FA
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OS Giken Nissan 300ZX VG30DETT TR Series Overhaul Kit B (NS101-BF6) NS101-BF60B
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OS Giken Nissan 350Z/370Z VQ35HR/VQ37HR TR Series Overhaul Kit B (NS112-BF6) NS112-BF60B