I have been having a problem with my 2019 cforce800xc it happens when i let off the throttle. When i let off the throttle over 20 miles per hour the whole front end starts to shake and the handlebars and a loud deep grinding noise happens i have checked the brakes and nothing looks wrong except the brake pads could be a little to close to the rotor

I just bought this quad in November with 200 miles in it all of the sudden i am hearing like a clunking noise in  the eps when moving steering a little bit right and a little bit left no light on dash for eps and eps still works just worried it is going to break  i am also hearing a squeak in the back right tire when making full rotation with tire i thought it was brakes but it wasn't