YAMAHA XJR 1200 1300 FJ 4 DEGREE IGNITION ADVANCER YELLOW ZINC PLATED XJR1300
XJR 1200/13004° Ignition Advancernew yellow zinc plated
This is a direct replacement for the original rotor.Advancing the timing will do exactly what it says. It will fire the spark plug 4 degrees sooner then it does normally. The plug actually fires before top dead centre so, for example, if stock is 6 degrees before top dead centre (btdc), then with the 4 degree advancer fitted the plug will fire 10 degrees before top dead centre. This will give you easier starting, make the bike feel a bit more torquey and make it run a lot crisper with better throttle response. It's an all around good mod for any kind of riding.