EBC offers a clutch spring kit from the CSK line, specially developed for the 2002–2021 Yamaha YZ 85. Made of high-strength steel, these springs ensure consistent and long-lasting tension, allowing for firmer, more precise, and more responsive clutch engagement. They effectively reduce slippage, improve engine torque transmission, and enhance the reliability of the clutch system. Thanks to their robust design, they also offer greater durability and consistent performance, even during intensive motocross or competition use.