Material: Aluminum and ceramics OEM: 12100-KRN-A40, 12100-KRN-A60 Cylinder bore diameter: 76.8mm Dimensions: 85 x 82 x 76.8 x 52 x 35mm Weight: 762g Quantity: 1 piece The Motorcycle Accessories Cylinder Block Bore 76.8mm is designed for use with CRF250R models from 2010 to 2017.Constructed from a blend of aluminum and ceramics, the cylinder block incorporates ceramic materials into the inner wall to improve wear resistance and support sustained performance under conditions.The precise engineering of the bore and mounting points compatibility with specified engine models, allowing for straightforward replacement or upgrade.This cylinder block fits directly into the designated engine configurations without requiring modifications.The 76.8mm bore aligns with specifications, supporting in off-road and pit bike applications.Its lightweight design contributes to overall engine efficiency while maintaining structural integrity.Intended for riders focused on off-road and dirt track environments, this component combines functional design with.The silver finish complements the visual style of the motorcycle while supporting mechanical performance.Engineered for resilience, the cylinder block serves as a solution for riders seeking consistent results in challenging riding conditions.