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OS Giken

Starting in the early 1960's, Masaharu Okazaki set out on a mission to build high-performance Japanese race engines to compete with the championship-winning European offerings of the time. Armed only with a pure passion for motorsports and an innate ability to absorb information, he basically took things apart in his garage, figured out how they work, and designed improvements to increase performance. A self-educated man, he originally began working on motorcycles and eventually moved on to parts development for 4-wheel automobiles. Mr. Okazaki founded his company, OS Giken, in the early 1970's with strength, durability, and the pursuit of high performance in mind; these goals for parts development remain true today and OS Giken has established itself in the upper-echelon for designing and manufacturing high quality, high performance, and supremely durable parts.

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. 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!

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Original price $ 1,450.00 - Original price $ 1,450.00
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OS Giken Mazda RX8/RX7 FD3S/RX7 13BT (MT Only) Super Lock LSD

OS Giken
Low stock

OS Giken Mazda RX8, RX7 FD3S, RX7 13BT (MT Only) Super Lock LSDThis Part Fits: Year Make Model Submodel 1988 Mazda RX-7 10th Anniversary 1993-...

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Original price $ 1,450.00 - Original price $ 1,450.00
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Original price $ 1,660.00 - Original price $ 1,660.00
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OS Giken Mitsubishi LANCER EVO 10 CZ4A TR Series Twin Plate Clutch - Requires MT071-BF50M

OS Giken
Low stock

OS Giken Mitsubishi LANCER EVO 10 CZ4A TR Series Twin Plate Clutch - Requires MT071-BF50MThis Part Fits: Year Make Model Submodel 2015 Mitsubish...

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Original price $ 1,660.00 - Original price $ 1,660.00
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Original price $ 1,520.00 - Original price $ 1,520.00
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OS Giken Toyota Supra JZA80 (5MT/AT/6MT / 8.5in) / Soarer JZZ30 (AT Only) Super Lock LSD

OS Giken
Out of stock

OS Giken Toyota Supra JZA80 (5MT/AT/6MT / 8.5in) / Soarer JZZ30 (AT Only) Super Lock LSDThis Part Fits: Year Make Model Submodel 1993-1998 Toyot...

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Original price $ 1,520.00 - Original price $ 1,520.00
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Original price $ 2,450.00 - Original price $ 2,450.00
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OS Giken Lexus IS-F USE20 (TCD) Super Lock LSD

OS Giken
Out of stock

OS Giken Lexus IS-F USE20 (TCD) Super Lock LSDThis Part Fits: Year Make Model Submodel 2008-2014 Lexus IS F Base

Original price $ 2,450.00 - Original price $ 2,450.00
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Original price $ 1,450.00 - Original price $ 1,450.00
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OS Giken 04/99 - 04/04 Honda S2000 / 04-05 Mazda Miata (MT Only) Super Lock LSD

OS Giken
Out of stock

OS Giken 04/99 - 04/04 Honda S2000 / 04-05 Mazda Miata (MT Only) Super Lock LSDThis Part Fits: Year Make Model Submodel 2000-2004 Honda S2000 Ba...

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Original price $ 1,450.00 - Original price $ 1,450.00
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Original price $ 1,520.00 - Original price $ 1,520.00
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OS Giken Nissan 350Z Z33 VQ35DE (MT Only) Super Lock LSD

OS Giken
Out of stock

OS Giken Nissan 350Z Z33 VQ35DE (MT Only) Super Lock LSDThis Part Fits: Year Make Model Submodel 2007-2008 INFINITI G35 Base 2007-2008 INFINIT...

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Original price $ 1,520.00 - Original price $ 1,520.00
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OS Giken Toyota GT86/Scion FR-S Super Lock LSD

OS Giken
In stock

OS Giken Toyota GT86/Scion FR-S Super Lock LSDThis Part Fits: Year Make Model Submodel 2013-2016 Scion FR-S Base 2013-2017 Subaru BRZ Limited ...

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Original price $ 1,450.00 - Original price $ 1,450.00
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Original price $ 1,520.00 - Original price $ 1,520.00
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OS Giken Toyota Supra JZA80 (6MT / 9 in) Super Lock LSD

OS Giken
In stock

OS Giken Toyota Supra JZA80 (6MT / 9 in) Super Lock LSDThis Part Fits: Year Make Model Submodel 1993-1998 Toyota Supra Twin Turbo

Original price $ 1,520.00 - Original price $ 1,520.00
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OS Giken Nissan 350Z/370Z Z33 VQ35HR/VQ37 (MT Only) Super Lock LSD

OS Giken
In stock

OS Giken Nissan 350Z/370Z Z33 VQ35HR/VQ37 (MT Only) Super Lock LSDThis Part Fits: Year Make Model Submodel 2007-2008 INFINITI G35 Base 2007-20...

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Original price $ 1,520.00 - Original price $ 1,520.00
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Original price $ 1,450.00 - Original price $ 1,450.00
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OS Giken Nissan 240SX S13/S14 KA24DE (MT Only) Super Lock LSD

OS Giken
Low stock

OS Giken Nissan 240SX S13/S14 KA24DE (MT Only) Super Lock LSDThis Part Fits: Year Make Model Submodel 1991-1993,1995-1998 Nissan 240SX Base 19...

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Original price $ 1,450.00 - Original price $ 1,450.00
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Original price $ 1,920.00 - Original price $ 1,920.00
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OS Giken Mini Cooper S R56 1.6L 6MT STR Series 215mm Solid Soft Release Sleeve Assy. & FW Bolts

OS Giken
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OS Giken Mini Cooper S R56 1.6L 6MT STR Series 215mm Solid Soft Release Sleeve Assy. & FW BoltsThis Part Fits: Year Make Model Submodel 2006...

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Original price $ 1,920.00 - Original price $ 1,920.00
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Original price $ 1,490.00 - Original price $ 1,490.00
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OS Giken Mini COOPER/S R56 STR Series Dampened Single Plate w/Soft Diaphragm Clutch

OS Giken
Low stock

OS Giken Mini COOPER/S R56 STR Series Dampened Single Plate w/Soft Diaphragm ClutchThis Part Fits: Year Make Model Submodel 2006-2013 Mini Coope...

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Original price $ 1,490.00 - Original price $ 1,490.00
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Original price $ 1,450.00 - Original price $ 1,450.00
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OS Giken 07/01 - 09/04 Honda DC5 Integra K20A (MT Only) Super Lock LSD

OS Giken
In stock

OS Giken 07/01 - 09/04 Honda DC5 Integra K20A (MT Only) Super Lock LSDThis Part Fits: Year Make Model Submodel 2002-2004 Acura RSX Base 2002-2...

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Original price $ 1,450.00 - Original price $ 1,450.00
Original price
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