Yes, that exhaust will fit earlier models as well. My friend had that exhaust on his yz, but it was really loud though. It looks like something from a 03-06 will fit as well. I'm just waiting for the right deal to come along before I commit. I tried a DMC from a 06 on my bike and it fit, but the mid pipe was close to the bladder cap on the shock reservoir. I was told that was how it fit on the 06 it came off.

I put a 04 YZ pipe front to back on my 2000 WR 400 fit just fine.

I have an 04 WB Pipe on my 2000 400 working with the stock header.

Thanks for the info gents!

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