What is different between the different years of KLX/DRZ110s?
Kawasaki/Suzuki has changed a lot of parts between 2000 through 2005 models. Don’t assume parts will interchange on the motors. They have had different cranks, cylinder heads, etc. They look similar, but are different. Another example is the shift shaft. The 2005 model got a larger shift shaft (which requires a different shift-lever).