12100-KRN-672 12100-KRN-730 12100-KRN-731 12100-KRN-732 Standard Bore Cylinder Jug Fits For 2004-2017 CRF250R CRF250X Material: aluminum Design and Style: Standard bore 78.00mm for precise fitment Fitment: Designed to fit CRF250R models from 2004 to 2009 and CRF250X models from 2004 to 2017 Performance and Property: Constructed to support engine performance and longevity Parts and Accessories: Replaces OE numbers 12100-KRN-672, 12100-KRN-730, 12100-KRN-731, 12100-KRN-732, and 12100-KRN-670 This cylinder jug features a standard bore size of 78.00mm, providing accurate dimensions for engine function.Made from aluminum, it supports consistent engine under demanding conditions.The design allows for straightforward integration into compatible motorcycle models, alignment with specifications.Engineered as a direct replacement, it matches the form and function of the specified OE parts for fitment.