The 2004 Yamaha YZ 250F Cylinder & Piston (K) 04 YZ250F 01 - 13 is a complete cylinder assembly designed for Yamaha's 2-stroke engine type. This product includes a cylinder barrel along with pistons, making it a convenient package for those looking to replace or upgrade their motorcycle's engine parts. With a focus on quality and compatibility, this item is suitable for Yamaha YZ 250F models from 2001 to 2013, providing a reliable option for riders seeking performance and longevity in their engine components.