2007 450r jetting

[86Rryder]

I bought a 07 450r...Put on a full ESR exhaust and air box eliminator kit. I bought the jet kit they offer. What size main should I put in it? What else do I need to change? The kit came with 4 main jets..adjustable needle..adjustable air/fuel screw...and some little bitty jet? Maybe the pilot.

[ATVRacer19]

i would check with ESR and see what they reccomend. they will know what works best with your exhaust system

[tooanxiousii]

Originally posted by 86Rryder
I bought a 07 450r...Put on a full ESR exhaust and air box eliminator kit. I bought the jet kit they offer. What size main should I put in it? What else do I need to change? The kit came with 4 main jets..adjustable needle..adjustable air/fuel screw...and some little bitty jet? Maybe the pilot.


As for the small Jet that should be your leak jet #55 right .. Start with your needle on the center clip.. Your air/fuel screw 2 turns out.. I would start with a #165 main jet and go from there..
As for you Pilot leave it stock