Jetting Question ???

[ATRider]

I have a '99 400ex with a 426 kit in it, a white brothers e seriers slip on, with a k & n filter. I'm trying to figure out what size jet I should use, and does anyone know how disc I should be running on the e series???

[johnsls]

does anyone know how disc I should be running on the e series???

WHAT?


I have a 170 jet and 42 pilot.. but if in case you do future mods you should probally buy a range of jets.. like 165 - 170 or 170-175
I think a web site called BIKEBANDIT.COM had these variations.

[ATRider]

Does anyone know how MANY disc I should be running on the white brothers e series pipe???

[AtvMxRider]

Originally posted by ATRider
Does anyone know how MANY disc I should be running on the white brothers e series pipe???

I always ran 12

[AZ_TRX400EX]

I run 12.

[ATRider]

Thanx I'll give it a try this weekend.

[northwest Texas]

I've noticed that I seem to have more low end torque with 6 disks than I do with 12. That's the way I run it now. If you want more top end at the expense of low end, run 12. Keep in mind this is all based on my experimentation.