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

OS Giken Universal R3C 26 Spline Center Hub (18-A) OS021-CH51i
OS Giken Toyota Supra 2JZGTE Replacement Push Rod for 110mm Slave Cylinder TY031-EC1
OS Giken Toyota Supra JZA80 2JZ-GTE Overhaul Kit A (for TY031-BC6) TY031-BC60A
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OS Giken Nissan SKyline RB26DETT Clutch Overhaul Kit B (for NS201-BC4) NS201-BC40B
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OS Giken OS-FR7 - 7 Speed Sequential (Gearbox Only) OS071-FR7
OS Giken  | MPN: OS071-FR7
OS Giken Movement Alteration Kit for RB26DETT TS3B Clutch Kit NS201-ALT18
OS Giken Honda Civic Type-R (FK8) Spec-S Super Lock LSD HA082-HA
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OS Giken Toyota Supra (2JZ-GTE) R3C Series Triple Plate w/ 26 spline Center Hub Clutch TY031-CH51
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OS Giken Toyota SUPRA 1JZGTE (R154 Gearbox) R4C Series Quad Plate w/ 26 GM Spline TY031-DH51
OS Giken Nissan Skyline R32/R33 GTR Clutch Release Movement Alteration Kit R3C NS201-ALT28
OS Giken  | MPN: MZ191-HA
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OS Giken Ford 9in 31 Spline Rear End LSD (Requires Consultation for Custom Tune) FD902-HA
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OS Giken 92+ Nissan Skyline R32/R33/R34 GT Clutch Release Movement Alteration Kit NS201-ALT15