Combines Rotor belt STS

I have run approx. 870 sep. hours or 13500 acres on a 2002 9650sts and just had a greenlight done. The rotor belt is still in good shape. No adjustment needed. Why not use orginal equipment from john deere. You are better off in the long run, warranty etc.

Have just replaced same at 380 sep hours (under warranty) it was partly "shreaded". Should last longer I believe and non genuine looks like a pretty good option to me.