The TS2AS Twin Plate Clutch Series line-up is the original technology used since the birth of OS Giken. This style of clutch has stood the test of time for good reason. It is capable of handling light to medium engine tuning. Most tuners will find this clutch suitable for their power figures. The stamped steel cover maintains a moderate pedal effort for its given capacity, while the heat-treated alloy clutch discs improve durability and maximize performance.

The TS2AS was designed with Naturally Aspirated and Supercharged engines in mind. This type of clutch will give the best engine response possible as well as ease of pedal by utilizing a softer diaphragm spring. The result is a very soft clutch pedal for applications that fall well below the maximum torque capacity of a standard TS2A. The clutch discs are 184mm in size and is good up to about 300lbs ft. The stamp steel cover allows for ease of engagement/disengagement and will handle the hard abuse found at the track.