OS Giken Mazda FC3S RX-7/RX8 STR Twin Plate Clutch overhaul kit B (STR2C) while also reducing the “clunkiness”

while also reducing the “clunkiness” of traditional clutch-type LSDs

Designed for service shops as a service tool

The "EXTRA MOTOR OIL" version of the T-shirt sold from 2021

Our OS Giken Release Sleeve Assemblies are designed specifically for our clutches

Toyota Celica/MR-S- 2ZZGE

OS Giken Mazda FC3S RX-7/RX8 STR Twin Plate Clutch overhaul kit B (STR2C) while also reducing the “clunkiness”The STR Clutch line up was designed to hold high capacity power while still retaining a relatively light clutch pedal. This technology was driven from our racer's demand for a lighter clutch during long endurance races in Japan. Heavy clutch pedals lead to driver fatigue during long endurance racing. The STR2C Twin plate feature solid hub clutch disks to provide efficient transfer of power while providing reliability and strength under heavy abuse.