Material Type: Nodular Cast Iron Condition: Brand Model Compatibility: CRM250AR 249 KAEG MD32, CRM 250 AR, CRM250 Bore Size: STD 66.4mm : Certification: ISO9001 Piston rings kit designed for use with specified motorcycle engine models.Constructed from nodular cast iron to support durability under -temperature.Features a standard bore size of 66.4mm for proper fitment.Certified to meet ISO9001 quality standards, indicating consistent manufacturing processes.Designed to help maintain engine compression and reduce oil consumption.Suitable for performance and general use applications.Includes components necessary for piston ring replacement.Engineered to support engine sealing and operational efficiency. This is an aftermarket accessory.Brand names and model numbers are referenced strictly for compatibility information.