APE is racing's leading manufacturer of outboard starter plates and nuts. Precision CNC machined to exact tolerances, APE's starter plates assure that the seal is directly on the crankshaft center line, which allows long service without leaks or premature seal wear.The seal holder has a built-in o-ring between it and the plate so that it will never leak oil. The APE starter plate comes fully assembled and ready to install with all mounting bolts.Available for both the small and the large Kawasaki cranks. Fits all Z1, KZ900, KZ1000, GPZ1100 thru 1985.