I'm new to this forum & have been riding & used to race competitively in the past sine 1966. I see nothing on here about DR 200s. My bike has 12,000 miles on it & I want to rebuild the motor. I can not find any information on aftermarket high performance parts for Dr 200s. I heard that someone on this forum used a 230 quad sport top end on a DR 200 motor & put it in a DRZ 125.