Fits the following: ASSEMBLIES WHERE 18310-HM7-000 IS USED 1995 TRX400FW A - MUFFLER 1995 TRX400FW AN - MUFFLER 1996 TRX400FW A - MUFFLER 1996 TRX400FW AN - MUFFLER 1997 TRX400FW A - MUFFLER 1997 TRX400FW AN – MUFFLER ASSEMBLIES WHERE 18310-HM7-A00 IS USED 1998 TRX400FW A - MUFFLER 1998 TRX400FW AC - MUFFLER 1999 TRX400FW A - MUFFLER 2000 TRX400FW A - MUFFLER 2001 TRX400FW A – MUFFLER ASSEMBLIES WHERE 18310-HM7-A00 IS USED 1998 TRX400FW A - MUFFLER 1998 TRX400FW AC - MUFFLER 1999 TRX400FW A - MUFFLER 2000 TRX400FW A - MUFFLER 2001 TRX400FW A – MUFFLER ASSEMBLIES WHERE 18310-HM7-A40 IS USED 1998 TRX400FW A - MUFFLER 1998 TRX400FW AC - MUFFLER 1999 TRX400FW A - MUFFLER 2000 TRX400FW A - MUFFLER 2001 TRX400FW A - MUFFLER 2002 TRX400FW A - MUFFLER 2003 TRX400FW A - MUFFLER