SRK™ Aramid Fiber Sportbike Race Clutch Kit by EBC. The new SRK series includes a full engine set of aramid lined friction plates heavy duty clutch springs of either the coil spring or diaphragm type together with a full engine set of steel separator plates. 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.