The Optional Noise Damper (SS) for the Evolution Line for the Yamaha YZ250F/FX and YZ450F was specially developed for use on racetracks where 109dB/A noise levels are required
Akrapovič uses performance-oriented catalytic converters that give you all the sound and performance upgrades you’re used to with Akrapovič exhaust systems. The catalytic converter is a honeycomb metal...