hmf jetting

[y-man]

hey guys i am going to be getting an hmf slip on the sport series and was wondering if u guys know if i will have to rejet or not and what u guys think of the hmf
thanks alot.

[Supr Truckr]

Yes, u will have to re-jet also take into considertion if u leave your airbox lid on and what your temp is & elevation.Plus if u put a aftermarket air filter on.Your stock should be #130,and u might want to put a 25 pilot jet in,stock is 22.5.

[y-man]

wut do u think of the hmf is it a pretty good exhaust
thanks

[cataway]

it will work , tho if you want power your also going to need a head pipe

[dvx400rider04]

hmf site says a 170 main wich is wut i used and mine runs great ...hmf is awesome