Motorcycle Piston Rings Kit Size: 66.35mm STD Compatible with EC, EX, MC, TE, TC, SXS, SX, XC 250 models OEM Codes: 54830007000I, 54830007300I, 55430007000 I Material: Nodular cast iron Certification: ISO9001 Designed to enhance performance and durability for off-road and motocross motorcycles.The piston rings are -engineered to ensure a proper fit and under demanding conditions.The nodular cast iron construction offers heat resistance and stability during -load and -temperature use. Compatible with a range of 250 models, including EC, EX, MC, TE, TC, SXS, SX, and XC series.The kit includes all necessary components for installation. Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.