GY6-61 motorcycle engine universal parts rocker arm assembly suitable for motorcycle engine rocker arms This is a multi-option listing, each option has a corresponding picture. Please select according to your needs. The rocker arm assembly is designed for motorcycle engines and is easy to install. Note that the color of the product may vary slightly from the picture due to and screen differences. There may be a slight measurement difference of +/-0. 5-1cm due to manual measurement. If you have questions about the product model, feel free to us before purchasing for confirmation. Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.