KDXRIDER.NET

my 200 will run with my dads 250, 250 has stock pipe aftermarket silencer no other mods my 200 has pro circuit pipe factory exhaust why am I able to run with him we both push our bikes when we race is that normal? feels like 200 has more power just curious any ideas?

Having owned a fully built 200, a warmed over 220, and the KDX250, the KDX250 should eat the 200 or 220 for breakfast. Something is definitely wrong with your dad's 250. I guess it could be the pipe as mine had a PC pipe on it but I can't imagine it would hurt the power that much. I would do a compression test and, if it tests good, start dialing in the jetting.

Yeah. Start checking stuff.

his kips is completely different then the 200 I spent like a month on this site researching my 200 now im messing with a complete different beast how do I jet his bike ive seen stuff on here for jetting a 200 haven't seen anything on a 250

Kawaman wrote: how do I jet his bike ive seen stuff on here for jetting a 200 haven't seen anything on a 250

Just follow the jetting guide. The process is the same if you have an 85, 125, 200 or 250.

To wake up the 250 you need the thin kx head gasket, and really lean the jetting way out.

nervous about lean blowing the bike up if ive never jetted before and im basing it on the sound how do I know whats a good sound and a bad sound?

can anyone send me the link to the jetting guide this guy had one on here that broke it all down where a child could do it ive searched every where and can not find it

Most kdx 250's run around 38 155 one leaner slide and one leaner needle. Mine loved it a little leaner i ran 32 155 one leaner slide two sizes leaner on needle opened up airbox kx head gasket boyseen reeds.

Jetting guide is a sticky under the jet and needle section