Dr. D WR450 Slip-on for YZ

Dr. D. only sells the full exhaust for the 08 YZ450 but they sell the slip-on muffler for the WR450.  Has anyone tried using just the slip-on muffler for the WR on the YZ with stock header? Does it fit?

I don't know, the stock 08-09 YZ header is a lot fatter than the 07-11 WR stock header. I plan on using my stock 09 WR header with FMF PC4 silencer on my 09 YZ. The 06-09 YZ 450 exhaust fit 07-11 WR 450 so it might work. I know my FMF PC4 silencer came with a couple of different sleeves to fit different size headers. Maybe Dr.D has those too. Call them and ask before you buy.

Dr. D. only sells the full exhaust for the 08 YZ450 but they sell the slip-on muffler for the WR450.  Has anyone tried using just the slip-on muffler for the WR on the YZ with stock header? Does it fit?

 

No way.  Besides, you really should get rid of that fat header anyway.  Robs low and mid range, and doesn't help top end any with a decent muffler.

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