Check these site:
http://justkdx.dirtrider.net/200vs220.html
Then check http://justkdx.dirtrider.net/ and check under KDX Tech Tips and then under KDX Hop-up Guide, this will give you a good guideline. You setup will depend on the type of riding you do most and your riding style.
I would start with a pipe (I used the FMF Gnarly Torque Pipe, because I do more technical riding) and an airbox lib mod first, then a silencer (FMF Powercore 2) and some performance Reeds, I used the Boyesen's. Changed the standard gearing to 12/47 from a 13/47, needed more torque at lower rpm. I am a fairly big guy at 208lbs in my socks, this will equate to 220lbs plus in riding kit.
Hope this helps.
http://justkdx.dirtrider.net/200vs220.html
Then check http://justkdx.dirtrider.net/ and check under KDX Tech Tips and then under KDX Hop-up Guide, this will give you a good guideline. You setup will depend on the type of riding you do most and your riding style.
I would start with a pipe (I used the FMF Gnarly Torque Pipe, because I do more technical riding) and an airbox lib mod first, then a silencer (FMF Powercore 2) and some performance Reeds, I used the Boyesen's. Changed the standard gearing to 12/47 from a 13/47, needed more torque at lower rpm. I am a fairly big guy at 208lbs in my socks, this will equate to 220lbs plus in riding kit.
Hope this helps.