This is a genuine Yamaha piston without a ring. It's crafted to the highest standards for a perfect fit in your engine. The ring size should be between .005 and .010 larger than the piston size. For example, if you have a 52.10 piston, you'll need a 52.20 ring. This ensures optimal performance and longevity of your engine.

Using this Yamaha piston is easy. First, make sure you've got the right ring size - remember it should be .005 to .010 bigger than the piston. Install the piston carefully into the engine. When it comes to maintenance, keep an eye on the piston's condition during regular engine checks. If you notice any wear or damage, replace it promptly. Always store the piston in a clean, dry place to prevent rust and other issues. This will help your engine run smoothly for a long time.