This cylinder block kit is compatible with DT230, MT250, and TSE250R motorcycles.It includes a 66.8 mm cylinder block, piston, piston rings, gasket set, and bearings.The cylinder block measures 133.3 mm x 105 mm x 66.8 mm.The piston diameter is 66.8 mm and thickness is 16 mm.The kit is constructed from aluminum and weighs 1858 g.It is silver in color.The kit fits models including DT230, MT250, TSE250R, HJ250H-5, HJ250H-1, FXMOTO X7 and X8, KAYO KT250, KEWS K16, K19, K20 series, SM-MOTORS GR7 T250L-M(A), GR7 T250L-M, GR7 T250LITE, and GR8 T250L.The cylinder is honed to precise dimensions for installation.The kit contains all components required to replace the cylinder assembly. This is a replacement item from an aftermarket supplier.Brand names are cited solely to demonstrate device compatibility.