2007 CRF450 Jetting With HMF Slip On

[Cr250Rider03]

Hey Guys. I have a question about jetting my bike with a hmf slip on exhaust. i have a brand new 2007 crf450 and loving it. i havent got the exhaust yet but hmf said i will have to rejet my bike. i live in west virginia, altitude 600 ft. so will i have to change my main jet or pilot. hmf said i will only have to change my main. or could it be possible that i wont have to jet my bike. thanks guys.

[Woody_393]

it is very possible that you won't have to re-jet it at all.

If you do have to rejet, it all depends on how the bike runs, and if poorly, where it runs poorly.

[Cr250Rider03]

Good new guys. i didnt have to re-jet my bike with the HMF slip on. The exhaust sounds really good on my CRF450.

[Woody_393]

Great! Now don't forget to tell us what you think of how it actually works

[Cr250Rider03]

Just put my HMF exhaust on. it sounds awesome, lot louder than stock. i can tell a difference in the midrange and top end power. But is alot cheaper than a yoshi or fmf. i only paid 250 bucks for a slip on.

[MotoMan]

Originally Posted by Cr250Rider03

Just put my HMF exhaust on. it sounds awesome, lot louder than stock. i can tell a difference in the midrange and top end power. But is alot cheaper than a yoshi or fmf. i only paid 250 bucks for a slip on.

Got any pics of it??