Xtreme Clutch Conversion kit - TOYOTA 1UZ - TTI 21x29.8mm KTY23564-2EXtreme Clutch 230mm twin plate kit The Xtreme Clutch 230mm Race Clutch is available with either ceramic, organic or carbon friction materials, making these kits ideal for high horsepower and motorsport applications where a high heat capacity is required. The Xtreme 230mm Race Clutch is the ultimate in clutch solutions with a range like no other. The 230mm range boasts a variety of kits to suit most high horsepower applications for street, circuit,