OS Giken

OS Giken is a legendary Japanese performance brand specializing in race-proven drivetrain components developed through decades of motorsports competition. Founded in Japan, OS Giken is best known for its precision-engineered limited slip differentials and multi-plate clutch systems designed to deliver exceptional strength, control, and durability under extreme performance conditions.

This collection includes OS Giken Super Lock LSDs, performance clutches, flywheels, and drivetrain components engineered for street performance, track days, drifting, and professional motorsports. Renowned for smooth engagement, predictable torque transfer, and unmatched build quality, OS Giken products are trusted by serious enthusiasts and racers seeking uncompromising drivetrain performance.