This piston kit from Wiseco is designed for use in Ski Doo 340RV snowmobile engines. It has a bore of 63.50MM and is a high-quality replacement part that will help keep your engine running smoothly. The kit includes all necessary components for installation and is compatible with a wide range of snowmobile models.The manufacturer part number for this kit is 1337M06350, and it comes with no warranty. It is important to ensure that this kit is the correct fit for your specific snowmobile model before purchasing. With its reliable performance and durable construction, this Wiseco piston kit is a great choice for any snowmobile enthusiast.