This motorcycle starter clutch assembly is a direct replacement part compatible with MT03, MT-03, XT660R, XT660X, XT660X 25KW, XT660Z Tenere, 660R, and 660X motorcycles.It is constructed from metal and meets ISO9001 external testing certification requirements.The assembly is designed to restore function for the specified models and years: MT03 MT-03 (2006–2009), XT660R (2004–2009, including 25KW variant from 2005), XT660X (2004–2009, including 25KW variants from 2005 and 2006), and XT660Z Tenere (2008–2009).It functions as an overrun clutch and is intended for installation in place of the starter clutch assembly.