ATTN: the arrow on the dome of this piston should point down, IF IT HAS AN ARROW (SOME DON'T). THESE KITS COME WITH THE PISTON, PISTON RING SET, PISTON PIN AND PISTON PIN CLIPS. SIZE STD._47MM_DRP-1_ 100025 .25mm/.010"_DRP-2_ 100026 .50mm/.020"_DRP-3_ 100027 .75MM/.030"_DRP-4_ 100028 1.0MM/.040"_DRP-5_ 100029_S1112 DRP1 DRP2 DRP3 DRP4 DRP5 DRP1to5PICK_YOUR_SIZE_HERE: STD._47MM_DRP-1_100025_S1411.25mm/.010"_DRP-2_100026_S1412.50mm/.020"_DRP-3_100027_S1413.75mm/.030"_DRP-4_100028_S14141.0MM/.040"_S1112 @ SOME DIFFERENT RING TYPES AND HOW THEY GO ON