This Yamaha 16-24 YZ250X 99-24 YZ250 Top End Rebuild Kit Cylinder is the perfect addition to your motorcycle. It includes a 2-stroke engine type and a cylinder barrel type. The manufacturer warranty is for 1 year, and it is California Prop 65 compliant. This kit is ideal for those who are looking to rebuild their Yamaha motorcycle's top end without any hassle. It comes with all the necessary components and parts to get the job done. The packaging is the same as what is found in a retail store, and it is a great value for the money.