These are spiral wound springs using four to eight pieces per set, made from heat treated high carbon steel and come in various shapes and sizes, delivering differing spring tensions depending on the size of the bike and the horsepower of your engine. It is important to note that you cannot change the basic shape of these springs to gain any performance advantage but what you CAN do is buy an EBC Brakes CSK kit which has slightly thicker winding material and delivers 10 – 15% more clamp pressure.
This can help reduce clutch slip or fast clutch wear on your machine.
All springs get tired and should be replaced at every engine rebuild or clutch overhaul.
EveryCK kit is matched and measured to give you a perfect stack height. Never try to fit individual plates is the EBC recommendation.
Drive case OIL is extremely important and riders should never use ATF (Automatic transmission fluid) which has been tried in the past to reduce oil drag and gain half a horsepower.
It does reduce drag and it does give you a tiny HP gain, but it ruins your clutch in minutes. Always use the bike manufacturers oil and fill to the right level. Another not so clever trick used to gain a tiny power increase is to reduce the oil level in the drivecase.