Motorcycle Engine Part Piston Rings Kit Size 65.5mm ~ 66.5mm For SL230 XR230 CRF230 FTR230 SL XR CRF FTR 230 This piston rings kit is made from nodular cast iron, offering strength and resistance to thermal expansion, helping maintain engine efficiency under demanding conditions.Available in multiple bore size options including standard, +25, +50, and +100, with diameters of 65.5mm, 65.75mm, 66mm, and 66.5mm, it supports various engine configurations and rebuild requirements.The product meets ISO9001 external testing certification standards, consistent quality. Designed for compatibility with models such as SL230, XR230, CRF230, and FTR230, this kit provides a direct fit replacement for 1 cylinder engines.It includes all necessary components for installation, simplifying the rebuilding process for both professional mechanics and DIY users.The construction supports stable performance during extended use, with materials capable of withstanding up to 105℃.OEM codes 13101-KFB-750 and 13011-KFB-305 are included for reference, accurate matching to specified engine requirements. Compatibility Note: This is a third-party replacement component.Brand and model references are included solely to indicate fitment.