DYNATEK Allumage pour 450 yamaha YFZ 450 de 2004 à 2006Ignition for 450 yamaha YFZ 450 from 2004 to 2006 Specific ignition for quads to optimize ignition and fuel consumption. This Dyna FS box allows you to modify the ignition advance according to the engine speed and push back the original cut off limit. Thanks to this Dyna FS you will experience an increase in power and torque, reduced reaction time. Has 4 available ignition curves (depending on model). It integrates different options such as the MAP