This engine rebuild kit is specifically designed for the Yamaha YZ250F and includes a cylinder barrel, crankshaft, and other necessary items. With a 4-stroke engine type, this kit will ensure that your off-road motorcycle will run smoothly and efficiently. The manufacturer provides a 6-month warranty, giving you peace of mind in your purchase. This new, unused kit is still in its original packaging, ensuring that everything is in perfect condition when it arrives. Get your Yamaha YZ250F up and running like new with this high-quality engine rebuild kit.