VERTEX gesmede zuiger Ø95.98mm standaard compressie Kawasaki KX450 Diameter Ø (mm):95,98 cylinder head and exhaust valves cylinder head and exhaust valves one thing has remained the same since we developed the first full face motocross helmet in 1975: we never stop breaking our own boundaries 97mm Standard Compression Kawasaki KX450 VERTEX Forged Piston Ø95