Leaderboard

It sounds like it’s happening when you hit a certain speed? Especially if it’s heard on a blacktop surface. My guess is that one of the drive shafts has a slight bend in it where you wouldn't feel it until a certain rpm. You may not be able to see that bend. I would inspect all the drive shafts for any marks that may be there. Something along the lines of you hitting a rock or tree trunk while you were riding ? I would also get the front wheels off the ground and spin the tires to see if there’s a bend in the rims and wiggle them as well to check the hubs. Do this for the front and rear.