wr450 gyrt insert



14 replies to this topic
  • Will450

Posted December 02, 2003 - 01:45 PM

#1

I wanted to get one of these inserts but the dealer parts guy says they only fit the gyrt oval muffler. Is that true? I was under the impression reading posts here that it would fit the stock muffler.

  • mike73

Posted December 02, 2003 - 02:08 PM

#2

It's for the stock muffler.

  • Will450

Posted December 02, 2003 - 02:17 PM

#3

Thanks, I found it on yamaha's website and gave the part # to the dealer. He thought I wanted an endcap.

  • jim-in-so-ore

Posted December 02, 2003 - 02:57 PM

#4

YOUR DEALER IS AN IDIOT.
Jim

  • Will450

Posted December 02, 2003 - 03:50 PM

#5

yeah,at least he was kind enough to order one for me.

  • Vibeguy

Posted December 02, 2003 - 05:01 PM

#6

I rode the WR 250 with the GYT-R (Vortip?) insert and was really disapointed with the performance. Sure, it was better than the stock "peashooter" but that aint saying much. I tried the WR insert from PMB and like it much more, better performance and still 96 db. I think they are about the same price too.

  • yam450

Posted December 04, 2003 - 11:31 AM

#7

Has anyone tried it on their WR450?

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  • KentuckyWR

Posted December 04, 2003 - 12:32 PM

#8

I just got the PMB insert.
I plan to only use it @ events and races where I have to.
I put it in for a few minutes and it does make it considerable quieter.
However, I didn't ride the bike with it in, only listened to it in the garage.
Need some info on fuel mixture screw settings before I test it in the real world.

  • dale

Posted December 04, 2003 - 04:03 PM

#9

I tried one on my wr426 and found this; Bike runs a little better than a stock DRZ400, definitely has less low end than open stock exhuast, needs jetting adjustment for better low end response, very quiet.
If you think you have too much power now, this will fix it. If you like to lug it and have instant snap at low end, don't do it.

  • yam450

Posted December 04, 2003 - 05:52 PM

#10

Thanks, I probably won't get it now. I like it the way it is.

  • tcmII

Posted January 29, 2004 - 02:25 PM

#11

For those of us that are new to this can you give more information on the "pmb" insert? Is it just an insert or a exhaust system? What does pmb stand for?

Thanks,

tcmII

1998 WR400 - bone stock, just bought used.

  • WR450F_RDR

Posted January 29, 2004 - 02:32 PM

#12

Pro-moto Billet, it is a insert, a bit more free flowing than the stock unit or the GTRT.

  • ddialogue

Posted January 29, 2004 - 03:53 PM

#13

I've been using the PMB since early summer last year. Yes, it has a noticeable power decrease on the low end, but mid and top are excellent. With the insert, you simply need to keep the rpm's up and it's fine. It has taken me a while to get used to it though. I will admit that there have been times when I really just want to run with the uncorked stocker, but it would mean rejetting again. If the carb was easy to access on these bikes, I would probably consider it. I really like how quiet it is and I wanted to do my part to keep the noise levels in check before they start mandating Kalifornia rules in Idaho. I truly believe it's coming our way and we might as well get used to it. :)

  • azbillygoat

Posted February 01, 2004 - 07:36 PM

#14

For those of you who don't like the "pea shooter" inserts. Check out the insert from Quiet Products. (www.quietiscool.com). Pipe diameter is 1.5" and is reasonably priced.

  • ddialogue

Posted February 02, 2004 - 03:52 AM

#15

For those of you who don't like the "pea shooter" inserts. Check out the insert from Quiet Products. (www.quietiscool.com). Pipe diameter is 1.5" and is reasonably priced.


Interesting. Looks similar to the old WhiteBrothers/BajaDesigns turn downs. Do you have one of these? I'd be curious to see what the performance is like compared to the PMB or GYT-R. Thanks for the link. :)




 
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