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coloradobrad

07 WR450 - smashed header... buy OEM or aftermarket?

19 posts in this topic

Depends.

You probably can get a low hour used OEM one for next to nothing.

A brand new one for a fair chunk of cash.

A Power Bomb or the like for a little less, but it changes the torque curve (a good or bad thing, depends if you want it changed).

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I don't know it if it's possible with your 07 but I used a stainless header pipe off of a YFZ450 quad on my 04 WR. It's a bit thicker than the titanium WR pipe and doesn't noticeably change the power characteristics.

Steve

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smashed mine a 3 weeks ago... gonna try to freeze it out..

got plenty of time to try with a broken ankle from 2 weeks ago's ride....

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Depends.

You probably can get a low hour used OEM one for next to nothing.

A brand new one for a fair chunk of cash.

A Power Bomb or the like for a little less, but it changes the torque curve (a good or bad thing, depends if you want it changed).

I wouldn't mind a bit more low end. I have plenty up top. Does a power bomb header feel any different? (seat of the pants feel)

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I don't know it if it's possible with your 07 but I used a stainless header pipe off of a YFZ450 quad on my 04 WR. It's a bit thicker than the titanium WR pipe and doesn't noticeably change the power characteristics.

Steve

Good idea. I'll look into this. Is the outer diameter of the quad header the same as a WR? I have a Leo Vince silencer. Whatever I get needs to fit the inner diameter of the graphite "doughnut" on my LV.

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smashed mine a 3 weeks ago... gonna try to freeze it out..

got plenty of time to try with a broken ankle from 2 weeks ago's ride....

There's no way a freeze\thaw\freeze cycle will fix what I did!! :eek:

So sorry about the ankle. Broke mine last year. I feel your pain. Hang in there :banana:

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There's no way a freeze\thaw\freeze cycle will fix what I did!! :eek:

So sorry about the ankle. Broke mine last year. I feel your pain. Hang in there :banana:

way to go... have been watching ebay also.. there is not much on there right now..

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the quad pipe will fit a 400 426 and 450 up to 05

Will not fit the aluminum frame bike

I may have one that will fit your bike

I will have to look tomorrow

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I did the same thing about 4 months ago to my 08wr450f. I bought a brand new 09yz450 pipe for $35 on ebay. I got the whole system: head pipe and silencer. Then I bought the PMB spark arrestor end cap and am loving it. Look for a YZ pipe, although the yz head pipe is larger in diameter (a few mm) than the WR so I am not sure if if will mate with your LV silencer.

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I Know my stock head pipe is on the shelf in my backroom if you still need one . I'll send it to you for 15 bucks . its a 0 mile pipe I pulled it before I ever rode the bike. but I only have the head pipe yet.

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.

Look for a YZ pipe, although the yz head pipe is larger in diameter (a few mm) than the WR so I am not sure if if will mate with your LV silencer.

kawi350 is right.

The (non-PowerBomb) Australian model '08 YZ450F actually had a larger diameter than the (PowerBomb) '09 version. Not sure if its the same for models in other countries.

I measured them up last year and posted the results here in Thumpertalk somewhere.

Greg

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