hmf

[400xe1999]

i am getting a hmf slip on for a 400ex....do i need to re jet or do i not have to because its only a slip on

[PIMP]

you will have to re jet if you want any power gains.
i have an hmf slip on my bike but i havent re jetted yet and it runs good and i did notice a lil more power but you will get the most power out of the pipe if you re jet.

[400xe1999]

ok i was jsut making sure i could ride wit no jet kit for a couple of weeks until i get cash

[wis400x]

Dont buy a jet kit! Too much $$$$$$$$$. Just find out what jets you need & buy them separetly!!

[hondajoe05]

or i have found a-lot of hmf slip-ons with jet kits for 215$ i think that is a steal and half:p