Every CK 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.
Oils must cool the clutch as well as lubricate it, never cut corners here and never put additives of any sort in drivecase oil, which cause plates to stick and glaze, invalidating your warranty and ruining your clutch. EBC clutch tools are available for most modern motorcycle, ATV clutch configurations and more are being added every month. The EBC tools can hold the basket or the plate hub to allow loosening or tightening of the retaining bolts minimising the risk of damage of the engine and clutch parts.
CKF is the name of the new EBC carbon fiber impregnated motocross & ATV clutches and they are built tough to last longer, grip better, feel better and drive better than stock cork based units. PLUS the high heat ability of these CKF Carbon Fiber clutch plates handles much higher stresses and temperatures encountered in racing, yet feel gentle and smooth in everyday riding. One day, all Motocross bikes and ATV will be built using a clutch like this, but for now the only way to get the best clutch in the game is to step up to an EBC CKF plate set, or go the whole hog and invest in the DRCF clutch kits which are sold as an assembly with a stack height measured to precisely reset your bike to the original sizing.
Never use automatic transmission fluid. EBC strongly recommend that this clutch is fitted by a mechanic who is professionally trained. Due to the heat fatigue of old springs we also recommend that you fit new clutch springs at the same time that you change your clutch plates. EBC manufacture a range of clutch spring sets. Before riding your motorcycle please ensure you are comfortable with the new lever force and can easily disengage the clutch with minimal hand pressure. Have an experienced rider test the machine.
Replacing just the “Apparently” worn plate or plates may not even get close to rebuilding your clutch to its original stack height and all you get is clutch slip and the job has to be done again. Compare that to the guaranteed results of the EBC DRC Clutch Kit.
Complete stack height controlled set of friction plates using …
EBC unique alloy article impregnated clutch facings that wear longer and resists burning plus …
Pin planished steel driven plates that spread the oil around the clutch better and prevent more clutch burn-up than ever before! 10-15% uprated heavy duty clutch springs to clamp those plates together firm and strong for the life of your clutch. New EBC Clutch tools are available for most modern motorcycle and ATV clutch configurations and more are being added every month. The EBC tools can hold the basket or the plate hub to allow loosening or tightening of the retaining bolts minimising the risk of damage of the engine and clutch parts.
Also available is the EBC DRCF Carbon Fiber Clutch kit which raises the bar on performance.
Built for the tougher new world of four stroke Motorcycles the DRCF kit swaps the stock type cork friction plates for a new set of severe duty carbon fiber lined friction plates for better heat and wear abilities …
But the new DRCF kits not only work well on strokers, they work great on ATV and two stroke motocross machines also.
EBC Brakes produces the largest range of clutches in the world and makes clutch rebuild kits for every ATV and Motorcycle on the planet.
These ne kits feature carbon fibre lined clutch plates plus a full set of steel plates and heavy duty springs. These kits are ideal for the higher torque generated in modern four stoke engines but are equally useful as a clutch upgrade in two stroke motorcycles.
An aramid paper lined plate set complete with heavy duty clutch springs (for bikes fitted with diaphragm type springs we can now supply a heavy duty spring kit), the SRC kit is ideal for heavy sport bikes, faster riders and production based race use.
Advantages of the SRC aramid series are longer life, higher heat resistance, although this clutch has a more aggressive/faster take up than the CK cork series.
With ever increasing horsepowers of motorcycle engines, clutches are being subjected to ever increasing stresses. Many motorcycles are tuned to a higher horsepower after production further increasing the demands on clutches. EBC Brakes has been involved with the clutch market for over 20 years with its famous DRC series, SRC series and CK series clutches and in 2009 launched a new range known as SRK, the street racer clutch kit.
Clutch springs fall into two basic types:
Coil springs
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.
Diaphragm Springs
These are dish shaped flat steel pressure rings and there are normally only one or two in a bikes engine. You should never add MORE springs on a diaphragm spring set up. If you do wish to upgrade the clamp load and your bike is fitted with a diaphragm spring clutch kit, buy an EBC Brakes spring kit, all of which are built with 10 -15% more clamp pressure than stock.
This can again reduce clutch slip and premature clutch wear.
When replacing your clutch on any ATV you have two options