Motorcycle Cylinder Head Standard Bore Kit for CB500XA CB750 CR500 CRF450R 2002-2008 Fits 96mm 12100-MEN-671 This cylinder head kit is designed for use with specified motorcycle models and is compatible with engines requiring a 96mm bore size.The kit includes all necessary components to replace or rebuild the cylinder head, proper fitment and function for the listed applications.It is intended for use in standard bore configurations and supports engine performance through precise engineering and material durability.Part number 12100-MEN-671 corresponds to the specification for replacement. Important: This is an independent aftermarket part.Brand/model references serve only to show compatibility.