This thread is to sort out the mystery of valve shim sizes of the Kawasaki ZXR250 as there are many conflicting reports on the internet whether they use the standard 7.48mm shim or a 7.9mm(8mm) shim. The differences could be a change at a certain date, difference between A and C models or the Malaysian spec could be different. My current bike is a 1992 ZXR250C complied in 1998 and uses a 7.9mm shim. See photos below for compliance date, engine number, picture of shim sitting on valve, and shim measurement. If anyone else gets a chance with a different year/model/spec ZXR250 can you please add similar so we can have this recorded for future?