OS Giken Mazda FC3S RX-7/RX8 STR Twin Plate Clutch overhaul kit A (STR2C) The TS3B was designed with

The TS3B was designed with Supercharged/Turbocharged engines in mind

The TR3B was designed with Naturally Aspirated engines in mind

Lock Timing - 448

Ramps - 25/35

Nissan Fairlady/240Z (S30) - L6  (Datsun R180)

OS Giken Mazda FC3S RX-7/RX8 STR Twin Plate Clutch overhaul kit A (STR2C) The TS3B was designed withThe 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.