This Wiseco piston and ring set (part number 176PS) is designed to fit Suzuki DS 185 models from 1978 to 1980 and TS TC models from 1971 to 1981. The set includes a piston and piston ring for optimal performance. The piston only has one ring, the bottom ring is missing, LOOK at the picture.  Made in the United States, this 2-stroke piston is a high-performance part from a trusted brand. It has a piston diameter of 64mm and is suitable for a variety of engines.