Stealth bike


6 replies to this topic
  • Superboar

Posted August 26, 2009 - 04:04 AM

#1

What aftermarket exhaust is QUIET but still allows good performance?

  • kskyles

Posted August 26, 2009 - 02:22 PM

#2

I've heard that the FMF Q4 does a nice job keeping the db level down.

  • Krannie McKranface

Posted August 26, 2009 - 08:47 PM

#3

Can't beat the stock pipe for maximum quiet.

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  • Superboar

Posted August 27, 2009 - 04:47 AM

#4

Lots of stock pipe modifications on this forum, most involve cutting up the stock baffles - a one way experiment.

Any experience with these two replacement inserts:

From Yamaha
http://www.yamaha-mo...5/0/detail.aspx

From ProMotoBillet
http://www.promotobi.../products_id/49

  • YamaLink

Posted August 27, 2009 - 05:07 AM

#5

I really like the PMB quiet insert. Never had an issue with the ranger, and it's easily removed.

The FMF Q is my next choice for QUIET without choking the bike.

Lots of stock pipe modifications on this forum, most involve cutting up the stock baffles - a one way experiment.

Any experience with these two replacement inserts:

From Yamaha
http://www.yamaha-mo...5/0/detail.aspx

From ProMotoBillet
http://www.promotobi.../products_id/49



  • Pooley

Posted August 31, 2009 - 11:48 AM

#6

FMF Q, with stock header on my WR426 and I test at or under 94 dB. And the pipe is almost as good of performance as an open stock exhaust with no insert.

  • MaddogYZ

Posted September 02, 2009 - 11:33 AM

#7

FMF Q isn't stealthy enough IMO, it still has pretty good growl when on the pipe. You can't beat a stock exhaust with a PMB insert.




 
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