This is a high-quality piston from Suzuki, compatible with the RM100 models from 1977 to 1978. It is an original equipment manufacturer (OEM) part, with part number 12110-41610-050. This piston is designed to provide reliable and consistent performance for your motorcycle engine. It is made by a trusted brand in the industry, Suzuki. Ideal for those looking to replace their current piston, this Suzuki part is a great choice for motorcycle enthusiasts and professionals alike. With its precise fit and high-quality construction, it is sure to provide optimal performance and longevity for your bike's engine. BX55