Hear a Hap's Cycle Sales It's is not often that people try to swap motors from one bike to another. We have learned same motor no problem different motors usualy don't just swap. Now a XR185 and XR200 motor may swap the ignition and some wiring may be different. A XL100 and XL125 motor will swap. the holes in the frame wom't line up and the motor mounts won't line up It would be cheaper to buy a bigger cycle and have it lowered