Right. The drone has nothing to do with the track. It's from the exhaust and only appears at constant throttle around 40ish mph give or take 10mph. It may be that certain windshields, riders sizes change the airflow around the sled and reduce the drone. Not sure. Exup sleds have it too.The drone is from the exhaust resonating in full face helmets. If you mostly lead don't ride in groups in the middle or rarely get stuck behind slower sleds on crowded trails you may never notice it. Also not sure if EXUP helps mitigate it.