This is a new, top quality, Shindy piston and rings kit for ALL year models from 1985-1988 Yamaha YFM 80 Moto-4. Don't waste your time rebuilding your motor with cheap quality, inferior parts. Build it right the first time with this top quality kit. Shindy kits are made in Japan and include Teikoku brand rings, which are the rings used by most OEM manufacturers. This kit comes complete with the piston, rings, wrist pin and both circlips. Please be careful selecting the piston kit size you want.  If you simply need replacement rings, we offer these as well in our other listings. 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.