Material Type: Nodular Cast Iron Size: 78mm Diameter Certification: ISO9001 Model Compatibility: 250 SX-F, XCF, XCFW : Kit Configuration: Piston Rings Set The Motorcycle Engine Parts Piston Rings Kit is made from nodular cast iron and designed for use with 250 SXF, SX-F, XCF, and XCFW models.The rings have a bore size of 78mm and are engineered to provide performance under demanding operating conditions.This kit includes a complete set of piston rings intended as a direct replacement for components, proper fit and function.Designed for engines requiring standard bore dimensions, the rings help maintain consistent cylinder compression and support efficient combustion.Their construction supports heat resistance and durability during regular.The product meets ISO9001 standards for manufacturing consistency.This piston rings set is suitable for riders seeking to restore or maintain engine performance.It is compatible with part numbers 79030507000II, 79030207000II, and 77730007100II.Installation requires no modifications and follows standard procedures for motorcycle engine maintenance.