This is a top quality Namura piston and rings kit for ALL year models from 2000-2002 Polaris Xplorer 250 4x4. Don't waste your time rebuilding your motor with cheap quality, inferior parts. Build it right the first time with this top quality kit. Namura piston and rings kits feature smooth piston heads for better fuel efficiency, hard anodized crowns making them 75% stronger than non-anodized pistons, a MOS2 Teflon/Molydbenum coating giving them high durability and lubricity, and they are made to exact OEM specifications. This kit comes complete with the piston, rings, wrist pin and both circlips. It comes in 2nd, 4th or 6th oversize, so be sure to select the correct size you need. Also, since you're rebuilding your top end, you'll need the gaskets, which we offer. Keep in mind, if your cylinder needs machining, we offer complete machine work as well---check out our services.