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prox piston ring sets kawasaki motorcycle piston model years size kx-125 2001-02 ... -200 1986-06 std std std .010 .020 kx-250 1990-91 std std kx-250 1992-04 std std ... std .023 .043 kx-250 2005-07 std std .023 kx-500 1988-04 std ... std kx-250f 2004-06 std 12.6:1compr std .080 kx- ... 250f 2006-08 std 13.5:1compr std std .080 ... -520 2000-02 ktm-525 2003-08 11:1compr piston size std std .080 std std 2-stroke ... continued piston piston kit ring set mm part number part number ... 4090r 95.98 4390b 4090r 98 4398 4098r piston mm 94.94 94.95 97 94.94 94.95 piston mm ... .95 54.25 54.5 53.94 53.95 53.96 53.95 piston kit part number 6423a 6423b 6428 6520a ... 6520b piston kit part number 4309a 4309b 5080 5081 ... 5050r 5050r suzuki 2-stroke continued piston kit piston piston model years size mm ...