To be sure that the clutch plates and springs are perfectly matched for ultimate clutch performance. ProX offers one part number for the matched parts packaged in a nice kit.ProX complete clutch plate kits contain a complete pack of friction, steel plates and a set of clutch springs for the application you need. This complete clutch plate kit is the easiest and best replacement for your clutch.ProX clutch friction and steel plates are manufactured by the leading OEM factories, mainly in Japan. All friction plates are made to exact OEM specifications and offer maximum performance and durability. The steel plates offer longevity, durability and the clutch feel of OEM.Special designed springs are 10% stiffer then OEM to reduce clutch slippage under extreme conditions, resulting in maximum control and instant drive.All plates can be used in combination with other ProX clutch components like the Billet 7075-T6 Alloy, hard-anodised clutch baskets, clutch inner hubs and pressure plates. These new kits will be the easiest and best replacement for your Dirt bike & ATV.