Help identify my exhaust

I just purchased a 2000 YZ426F and need help identifying the exhaust. I was told it is an older Pro-Circuit T4 exhaust. However, the badge is gone and I cannot find any markings on it. The canister is 3.5" in diameter. It is very loud and I would like to get a quiet tip, spark arrestor and new end cap (if needed). Any help identifying the exhaust and correct parts would be appreciated.

Pablo45

Link to pictures is here:

https://picasaweb.google.com/scienceguy4/Mar22011?authkey=Gv1sRgCK2e_bqP38b-5wE&feat=directlink

It could be one of the early T-4's, hard to tell. The exhaust outlet looks too big to me. I think it looks more like one of the old white brothers R4 silencers, but like I said it's really hard to tell. Pro circuit silencers often have their name stamped into the front of the silencer where the midpipe meets the can, though I'm not sure if they all have that.

I have a project 426 in the garage, when I get home I'll try to remember to snap some photos for comparison. It has the PC T4 on it.

It could be one of the early T-4's, hard to tell. The exhaust outlet looks too big to me. I think it looks more like one of the old white brothers R4 silencers, but like I said it's really hard to tell. Pro circuit silencers often have their name stamped into the front of the silencer where the midpipe meets the can, though I'm not sure if they all have that.

Looks like an old R4 to me, too. If so, loud is only the beginning. You'll have to fab something for that, or suck it up and buy something else to put on it.

It is a t4 tunable...had on on my 2001 ktm400sx

Ignition makes a product called the "db dawg universal 4-stroke silencer insert" (they claim up to 10db reduction in noise). They also make a spark arrestor that goes with it (sold separately). They should have one that will fit your pipe.

http://www.dnamufflers.com/Ignition/mufflers.html

It's not the PC T4, the one I have does not have the springs at the mid pipe to can connection. I'm with grayracer and KJ790 on this one.

maybe its a jardine

Could be either the pro circuit, or white bros, or a DSP. The pro circuit tips fit on all of them and were offered in different sizes. I used to work for DSP and we tested and played around with the different tips 10 years ago.

between the time on that pipe and the outlet size that thing looks like and ear splitter

If you could find a low hour used stocker on ebay even that would make your bike sound and probably run better.

I know people replace the OEM pipes all the time, but I find the stock YZ silencers to be just fine. And as far as quality not too many aftermarket pipes match the same quality as stock pipes

They look cooler till the mid pipes rust or the weld beads rust through

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