I just got a 250ex for my son.That is one cool little toy,but we need more POWER.And any ideas on suspention and handling would be great. In one of D-Wheel mag. it showed that the 250 had the smallest carb. of any quad with a 125cc-300ccmotor.So get bigger carb.or just a jet kit? NEED HELP!!

 

That little carb is fine for that motor. plus dirtwheels gets alot of specs wrong. I piped mine and put a air filter in it and it added a lot more power. plus it sounds mean. I got the jwt kit and jetted it the way it said but it ran to rich. I wentup one size on the main and it runs nice. plus its cold as heck here so it would be leaner. I might have to go back to stock jetting this summer. If you find any internal mods like a cam or a high comp piston you let me know. I have been asking but nobody knows. I would like to hop this little toy up before I upgrade to a bigger quad.

 

Just opdered durablue graphlite rearwheel spacers,but i couldn't find them for s 250ex so i got them for a300ex i hope they will interchang. did u get the KxN jetkit for a 250ex or what?

 

k&n jet kit and air filter, yoshi rs-3 comp system, powroll bore kit, bigger carb... this winter im gettin the k&n jet kit and air filter, the yoshi exaust, dura blue wheel spacers front and back...that will be it until spring

 

I would have to say any quad will perform better with a pipe and jet kit. I know i dont have a 250ex but my lakota got hella faster with my exhaust (full system) jet kit and airfilter. I would start out with these mods than later on move up to the bigger stuff like the big bore kits, cam, and stuff like that.

 

powroll makes a big bore kit a few other little things.thier website is www.powroll.com

 

To make it a little more stable. Durablue, makes an elemenator axle +2 look at graydonproline.com.

 

better yet, look at www.rockymountainatv.com