Motorcycle 47mm XR70 DAX70 CRF70 CUB70 Cylinder Block Kit For C70 CT7 DAX XR CRF 70cc 4T 12101-GB0-910 This cylinder block kit is designed for use with 70cc four-stroke engines.It features a 47mm bore diameter and is compatible with models using the 12101-GB0-910.The kit includes all necessary components to replace or upgrade the engine cylinder block.It is suitable for use on motorcycles requiring specifications matching XR, DAX, CRF, and 70 series applications.Installation requires standard mechanical tools and knowledge of small engine assembly.