[1987_250x]

I wanted to do some jet work. My 250x is mostly set up for high end power and i was just wondering if i only needed to do that one jet or if i have to do them all. Also was wondering what jetting kit to get.

 

[Billy250X]

What mods do you have done.I'm pretty good at judging the jetting on these machines.

 

[1987_250x]

I was told i have a cam from the guy i bought it from. I put a DG RCM complete exhaust system in as well. I have noticed a huge jump in High end power, so me and my dad are guessing the cam was just never really noticable until the pipe was put on.

 

[Billy250X]

Are you running stock jets now?If so you need to run a # 40 pilot and a #130 main and remove the airbox lid.

 

[TRX2fiveO]

Agree^^^^^^ Im running a 12:1 high compression piston and a stage 1 WebCam I'm jetted at 134 main and 42 slow jet. so with a cam and pipe I would try Billy's recommendation. make sure you back the pilot screw out about 1/2 turn and reset the idle.

 

[1987_250x]

Along with the jetting i wanted to get a [email protected] filter, does this change anything?

 

[Billy250X]

Yes more flow of air means you need more fuel but with the jetting I already gave you you'll be fine.Good luck bud.

 

[Redracer]

Jetting is not an upgrade. It is how you add or remove fuel to your mixture. ANYTIME you make changes to either your intake or exhaust you must rejet.