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Anchslayer

06 YZ450 Exhaust on 06 WR450

19 posts in this topic

Will it fit? I can get the stock YZ exhaust cheap but I know these bikes have different frames so am concerned if it will fit or not. Also, if anyone has done this how much better would it be than stock WR with PMB insert because that's what I am running now. Noise doesn't matter where I ride, its all about the power. Thanks.

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YES!

An 03-05 YZ muffler will fit an 03-06 WR

Thanks JSanfilippo.

I just happened to see one posted on E-bay too.

So it appears the options for my 2004 wr450 are::mad:

- stock exhaust with insert removed,

- stock exhaust with a PMB insert,

- or pick up a used yz450 exhaust.

Please share any opinions on db's, power, etc.

P.S. Sorry for highjacking this thread.

Cheers.

Bill.

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So it appears the options for my 2004 wr450 are::mad:

- stock exhaust with insert removed,

- stock exhaust with a PMB insert,

- or pick up a used yz450 exhaust.

Please share any opinions on db's, power, etc.

Anybody have some comments.

Bill.

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Thanks JSanfilippo.

I just happened to see one posted on E-bay too.

So it appears the options for my 2004 wr450 are::mad:

- stock exhaust with insert removed,

- stock exhaust with a PMB insert,

- or pick up a used yz450 exhaust.

Please share any opinions on db's, power, etc.

P.S. Sorry for highjacking this thread.

Cheers.

Bill.

YZ pipe with PMB spark arrestor and quiet insert will give you the best compromise between all of your choices. The uncorked WR can will be too loud and the PMB insert in the stock pipe may be a tad on the restrictive side and still kinda loud. An 03 WR 450f I heard this past summer with the stock can and the GTYR insert was louder than my TT-R with a quiet tipped Pro circuit T-4. Why not just look for an FMF Q?

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Why not just look for an FMF Q?

Cause I am cheap? In reality, the general message I get from my fellow TT'rs is to spend the money to get the suspension set up properly.

So the YZ exhaust or PMB insert are just that, a compromise.

But you are suggesting that an FMF Q, or similar aftermarket can, would be quieter than the stock exhaust with a PMB insert?

Thanks for the input.

Bill

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Cause I am cheap? In reality, the general message I get from my fellow TT'rs is to spend the money to get the suspension set up properly.

So the YZ exhaust or PMB insert are just that, a compromise.

But you are suggesting that an FMF Q, or similar aftermarket can, would be quieter than the stock exhaust with a PMB insert?

Thanks for the input.

Bill

Spend your money on suspension. That is smart, smart, smart. I did it backwards but should have listened. New pipe, small change over pmb. New suspension is like having a new bike.

Most of the Q pipes have the same db level as the pmb insert. They are designed to be slightly under 96. There are a few exceptions.

I had an fmf factory 4 with powerbomb header. I am now back to the stock can with the pmb insert. It is right at 96, which is a little loud, but not that bad. But sound matters here in California. I can easily switch to the stock insert and can hear my kids riding behind me. The Factory 4 is in the back of the garage.

the thing is... I cant really tell the difference because I am never riding WFO on a long road. I rarely get into 4th gear with the type of riding I like to do. I go about 25-30mph though the desert single track. Any faster than that and I am looking for a new trail. Depending on your type of riding, you may not need more top end. Personally, I need low end and midrange. The pmb gives you that and a healthy top.

How much more power are you looking for.

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Depending on your type of riding, you may not need more top end. Personally, I need low end and midrange. The pmb gives you that and a healthy top.

Maurice, you described my riding style to a tee. I love the low end grunt the 450 provides so I am short shifting most of the time. If I wanted a screamer, I would bought a two stroke.

The main reason I am looking for alternatives is very superficial: I like the quietness of the stock can with the stock insert, but it is very restrictive. So I rode for awhile with the insert removed, and damn that was loud. And not loud in a pleasant way. Then I was riding one day with a buddy who has YZ exhaust on his 426. I liked the way that sounded. It had a nice note to it. True it was probably louder than I would be comfortable with in the long run.

So I think I'll put the PMB insert on my wish list. Maybe send a letter to Santa Claus.

By the way Maurice, what year bike you riding? And are you still running that trials tire on the rear?

Thanks.

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I have a 2003 yz450f silencer I will sell you. It has a tiny dent on the silencer but that is it! I will sell it to you for $20 if you pay for shipping. I can take it to ups.

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Send me a pm if you are interested. I am not ripping you off.

I PM'd you. For 20 bucks plus shipping, I don't think I can lose. As long as it's in half decent shape.

Any pictures?

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I have a 2003 yz450f silencer I will sell you. It has a tiny dent on the silencer but that is it! I will sell it to you for $20 if you pay for shipping. I can take it to ups.

They had a "dent" built into them, on the backside. Is that the one you are talking about?

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