 In the Blaster version & some of the DT200WR versions the oil pump is not installed, blanking plug is fitted over the oil pump drive.The Yamaha WR200 shown above has the same crank & Stroke as the DT200R & ATV Blaster.The WR200 crank cases are similar to the DT200R but with a bigger reed cage port and slightly revised induction port shapes in the crank cases.