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 for use with YZ250F and WR250F models from 2001 to 2013.Featuring a 77mm cylinder bore size, it supports engine performance and proper fitment.The unit is constructed using materials intended to meet the demands of regular riding and off-road use.The package includes one cylinder, one set of piston rings, and a pin and clip kit, providing all necessary components for installation.Designed as a direct replacement, it aligns with specifications to support integration into the engine system.Its design allows for straightforward mounting without requiring modifications.This cylinder set is engineered to maintain consistent performance and under typical operating conditions.It serves as a functional replacement for worn or damaged components, supporting engine for riders focused on maintenance or performance restoration.