OS Giken NA/NB Mazda Miata TR Single PlateSingle Plate Clutch overhaul kit B (TR1A) The OS expanded rear differential

The OS expanded rear differential cover is made of cast aluminum and is designed to aid in additional fluid capacity

Toyota Celica/MR-2 - 3SGTE Turbo

The [TS2BD] - TS Twin PlateClutch Series line-up is the original technology used since the birth of OS Giken

The aluminum cover allows for higher clamping force (increased capacity) and will handle the hard abuse often found at the track

Preload - 12S

OS Giken NA/NB Mazda Miata TR Single PlateSingle Plate Clutch overhaul kit B (TR1A) The OS expanded rear differentialThe [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