Posted February 21, 2003 - 01:09 PM
Does the wr 250 and 426 have the same silencer? or they different.
I want a wr silencer for my 99yz400. I was thinking of getting one of these inserts for it. But am unsure what years the insert fits. And what years silencer fits my yz.
I need something quiet for select events to pass a soundtest.
Posted February 21, 2003 - 02:25 PM
Posted February 21, 2003 - 05:29 PM
To sum it all up: I feel the GYT-R muffler insert does a good job of keeping the sound levels down without sacrificing too much performance.
FYI, the packaging stated this will fit the WR250, WR426 and WR450.
Posted February 22, 2003 - 03:02 AM
Some days you have to ride quiet and this thing has to flow better than the stock one. It is a two second removal so I will yank it at the Harescrambles. It's the "let them know there is someone behind you slowpoke" factor. And the bike runs a lot better without any insert.
Posted February 22, 2003 - 04:17 AM
Thanks for the report back on performance ! That is what I was hoping for.
Posted February 22, 2003 - 07:06 AM
Posted February 22, 2003 - 07:12 AM
Posted February 22, 2003 - 02:37 PM
Posted February 23, 2003 - 11:33 AM
Posted February 25, 2003 - 09:45 AM
Posted February 26, 2003 - 04:08 AM
Posted February 26, 2003 - 06:02 AM
Posted February 28, 2003 - 10:23 AM
Posted February 28, 2003 - 05:11 PM
Noise levels were markedly lower. The open stock muffler idles at around 94 dBA (loud.) The new insert lowers the idle level to 87-88 dBA. I measured 20" away at 45° with the meter set on slow response. I'll have to get someone to hold the throttle on Sunday to see what mid throttle noise is and I'll post results.
94 dBA is about twice the noise that 88 dBA is, depending on exactly what scale/standard you are using, so it is a lot quieter. That's about the noise level my old FMF muffler put out, so I know it should be able to make better power. I just have to find it somewhere in the carburetor. My wife remarked that it's quieter because when she's in the house she can always hear me running around the neighborhood doing my test ride/warmups. This time she didn't even know I was riding.