WR450F exhaust system

5 replies to this topic
  • Cooldog

Posted March 11, 2003 - 10:49 AM


Images and horsepower increases are posted on the Pro-Tec web site. Check out the Pro-Tec Mach 1

  • endurodog

Posted March 11, 2003 - 03:39 PM


Smells like spam to me!!! Why is your web page take us to this site also??

  • utvols

Posted March 11, 2003 - 07:10 PM


Someone prove to me that just bolting on this exhaust will add 16hp to my WR and I will buy you the latest Ti muffler bearings and give you first shot on the swamp land I have for sale.

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  • geo199

Posted March 12, 2003 - 03:26 AM


a 16.2 hp gain at 8500 rpm???!!???
right :)

  • Indy_WR450

Posted March 12, 2003 - 05:00 PM


It may be a little exagerated but the concept of adjusting the noise level is pretty cool. I would like to get any feedback from anyone that may have dealt with this company and their products. Time to research the web.

  • crash

Posted March 12, 2003 - 06:54 PM


I work at a Yamaha shop and have ridden both the WR 250 and WR 450-Stock out of the crate they only run half as good as a YZF so I think the numbers are true.


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