Competition Clutch 4 puck sprung ceramic disc for Mazda 12A with Turbo II splines. This Competition Clutch disc is designed for the serious enthusiast with considerable modifications. Each disc features 8 high-coefficient ceramic pads for quick engagement and extreme duty friction. Competition Clutch's specifically designed high torque disc delivers maximum holding capacity without compromise. The sprung retainer assembly boasts 6 dual springs and 6 severe duty retainer rivets, ensuring power and reliability, as well as ease of gear transition. *Disc size and spline : 225mm x 1 x 23T.