The [TR1A] - TR Single PlateClutch series line-up was designed for vehicles which have substantial increases in engine power. The billet aluminum cover provides a more direct clutch pedal feel, but still maintains ease of engagement due to the unique leverage mechanism of the diaphragm spring to reduce overall pedal effort.

The TR1A was designed with Naturally Aspirated engines in mind. This is typically the lightest clutch/flywheel assembly you'll find for most applications. The clutch discs are 184mm in size and is good up to about 250lbs ft for NA motors. The aluminum cover allows for higher clamping force (increased capacity) and will handle the hard abuse often found at the track.