This one-way starter clutch bearing is compatible with YFM660R, YFM660RLE, and YFM660RSE models from 2004 to 2005, including Limited Edition and SE versions.It is designed as a direct replacement for the component, proper engine engagement and starting performance.Built with materials, it withstands regular operational stress and integrates into the existing starter system.The part matches OEM specifications for accurate fitment and requires no special tools or modifications for installation.