Grinding noise???

[gonenbroke]

well i was out jumping today on the 300 and nothin big n had a down hill landing but after i hit it 2 or 3 times and i put it in reverse and it started making a grinding sound so i stopped and drove forward n it didnt do it so i put it in reverse and drove forward 5 r 6 times n it only makes the grinding sound it reverse what do yall think it is???

[DAVE14]

does it do it while braking ? any wheel bearing or rear axle play (beaing carier ) ?if your pads are totally shot you could here some grinding but you normally can catch that before its too late

[rooster300ex]

I would check your rear axle bearings.