I have a xr70 motor runs great 3 speed auto cluch. Would be a good replacement or for parts I only ran it up and down the driveway a few times as I swamped the motor for a 125 during my pit bike build. This motor will work in crf frame as well as xr50 crf50 xr70 and crf70. I also have a few xr70 parts I could sell. Bars rear shock. Text email call gimmie cash and take it