Guys-
I recently installed a K&N air filter, K&N DynoJet needle & 165 Main Jet, ported my airbox, and threw a White Bros pipe and CDI Rev kit on my 400EX.

My question:
With the power increase from all the above mods, if I now drop 2 or 3 teeth on my rear sproket, will I get a higher top end speed *WITHOUT* losing any pull off the line (holeshot)?

Any drawbacks to running a smaller rear sproket?
Any idea what top speed would be with around a 35-tooth rear sproket?

Thx.

 

I don't think you got that much power out of those mods to pull that small sprocket. Inless you want to lose alot of bottom end power.