Tactical Analysis: Arsenals 3 4 3 Breaking The Lines Xtreme Performance Sprung Ceramic Clutch Kit incl. Flywheel. At Xtreme Clutch, we strive to offer a variety of clutch options for each vehicle to ensure a clutch solution is available for every vehicle application. Whether you are modifying a road vehicle or building a race car from scratch, we have the clutch solution for you. Our upgrades are divided into different stages depending on the friction disc material and the number of friction discs. Sprung Ceramic 1B The sprung ceramic range of kits have been developed for motorsport applications where a higher heat and torque capacity is required. These discs utilise a sprung hub that helps to reduce shock loading and are commonly used in track cars that retain the factory transmission. Recommended for: Recommended for Track (Motorsport) focused cars, or those who want the motorsport feel. Notes: This clutch kit includes a Flywheel