50 mm Oversize Piston and Rings. John Deere Gator HPX 4×2, 4×4, 4×6 and HPX Trail 1993 and Newer that uses the Kawasaki FD620D Engine. Also Fits John Deere 425 and 445 Lawnmowers with Kawi FD620D 1993 and Newer. Kit Includes: Piston, Rings, Wrist Pins, Circlips, Oil Screen And All Gaskets To Do A Engine Rebuild. Kit Also includes the Following items not pictured: Spur Gears, Camshaft, Push Rods, Oil Pump Gears, Thermostat, Valve Tappets, Water Pump, Crank Bearings, Valve Springs, Oil Pump Shaft and Connecting Rods. Our (Pats Small Engine Plus) RBLD637.