Racing Ignition Coil: Yamaha YFM660 YFM 660 (2001-2005) Yamaha FZ700 then a racing coil is

then a racing coil is the way to go

This ignition coil has been manufactured to replace the original coil on an Aprilia SX125 for the years and models shown above

To upgrade OEM: 21121-1056 / 21121-1140 / 21121-1170 / 21121-1181 / 21121-1234

Honda CBR400 RR (NC23) (1988-1989)

This unit is designed to replace the factory unit on a Honda CB500 for the years and models shown above

Racing Ignition Coil: Yamaha YFM660 YFM 660 (2001-2005) Yamaha FZ700 then a racing coil isBrand New racing ignition coil to fit: Yamaha YFM 660 R Raptor (2001 2005). Yamaha YFM 660 F Grizzly (2003 2005). Yamaha YFM 660 FG Grizzly (2007 2008). Yamaha YFM 660 FWA Grizzly (2002). This high performance ignition coil pack has been manufactured to upgrade the original coil 3KJ 82310 10 or 4KJ 82310 10 on a YFM660 for the above years and models. If you're having spark issues with your YFM 660 then it's a no brainer to get a new coil on the quad