Material Type: Nodular Cast Iron OEM Code: 79030231044 Size: 78mm Diameter Bore Size: Standard Package Including: Piston & Ring Kit Fitment: 250 EX*-F, SX-F, XC-F, SXF FACTORY EDITION models The motorcycle piston rings are constructed from nodular cast iron, a material known for its strength and resistance to wear.This composition supports performance under demanding operating conditions.Designed for use in 250 EX*-F, SX-F, XC-F, and SXF FACTORY EDITION models, the piston and ring kit features a 78mm diameter and standard bore size for precise fitment.The ring design accommodates temperatures and pressures typical in performance riding applications.The piston shape helps reduce thermal expansion and improves heat dissipation, contributing to sustained engine efficiency.These characteristics support consistent compression and smooth power delivery.Each piston ring set is manufactured to meet ISO9001 standards through third-party testing, conformity with established quality benchmarks.Suitable for riders seeking dependable internal components, this kit provides a direct replacement for specified motorcycle models.