Need quit exhaust for 2003 Yamaha WR450F

22 replies to this topic
  • L. Euler

Posted June 23, 2013 - 02:39 AM


How the hell do you guys remove the allen screws from the muffler end of the pipe to remove the tip? it seems damn near impossible and I think I stripped the one allen bolt. :banghead: :banghead: :banghead: :cry:

Ended up stripping out a couple of mine too and had to use new self drillers in new holes. My Q is ancient anyway and wasn't a big deal to use new screws.

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  • mud_or_dust

Posted June 23, 2013 - 06:27 AM


Drill out the old screws. Replace with self tappers if you can find some big enough. Pop rivits or new holes are options too.

  • n16ht5

Posted June 24, 2013 - 07:06 AM


I'd have to go with n16ht5 opinion. Ive read his silencer shoot out thread.he rides enough and would appear he would know how each pipe performs.
I just wouldn't take his opinion on the weight of a WR . He just thinks his WR is a light dirtbike

It's only heavy when you aren't in shape :goofy:

I just like making fun of people who complain about the weight when they should have bought a YZ250 to get their weekend warrior sideways flat brimmed hat hole shots ;)

I've run the FMF Q4 and found the spark arrestor was more of an afterthought (quite restrictive). I had to rejet when I ran the spark arrestor. But then I was not legal on USFS land. And the LEXX with the trail saver is much quieter.


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