A75E-79Mm Moto Engine Parts: Piston Rings & Toolkit For XR250 CBX250 XR300 CBX300 12100-KPF-900 This engine component set includes piston rings and a toolkit designed for use with specific motorcycle models.The piston rings measure 75E-79mm and are compatible with engines requiring this size.The included toolkit provides necessary tools for installation and maintenance tasks.Designed to fit certain 250cc and 300cc single-cylinder engines, this kit supports engine rebuilds and performance upkeep.Components are engineered for precise fitment and under standard conditions. Notice: This replacement item is produced by an independent supplier.All brand and model mentions are for compatibility purposes only.