- Oct 22, 2003
I bought a brand new 2002 KDX 220. After a couple trips to the desert, I figured out this is a woods bike and not an open plains runner (no top end at all- I mean ZERO). Well now things are gonna change. Here is what I have done to my otherwise stock bike: Tossed the snorkle, tripled the size of the remaining airbox lid opening, installed a UNI high flow filter, had the 33mm carb/slide bored and reworked to 36mm by RB Designs, installed Carbon Tech carbon fiber low tension reeds, installed FMF Gnarly Rev pipe w/stock silencer. I figure all that stuff ought to do something but it remains to be seen. My final big question is what jets to run. Has anybody out there jetted there bike with the RB Designs Carb? Canadian Dave says given the mods I have to jet it identical to a late model KDX 200 (#160 Main, #48 Pilot). RB Designs sent the carb back with a #152 Main and #40 Pilot. Of coarse it has a divider plate with the slide and circuit reworked. So I could use some advice. I ride at sea level (Ocotillo Wells) in really warm weather and would rather run a scosh on the rich side.