1Set Cylinder Stock Bore 77mm Jug 5XC-11311-20-00 5NL-11311-00-00 5NL-11631-20-00 For YZ250F YZ WR250F 2001-2013 This cylinder set is designed as a direct replacement for YZ250F and WR250F models from 2001 to 2013.Featuring a 77mm cylinder bore size, it supports engine performance and proper fitment.Constructed with materials, the cylinder is engineered to handle demanding riding conditions, including off-road use and racing. The package includes one cylinder, one set of piston rings, and a pin and clip kit, providing all essential components needed for installation.Designed for compatibility with specified OEM part numbers, this set integrates with existing engine parts without requiring modifications. Engineered for consistent performance and long-term durability, this cylinder supports engine function and is suitable for riders seeking dependable replacement or restoration parts. This is not an OEM product.Brand/model references are included solely to assist with compatibility identification.