2001 WR426 HP rating

1 reply to this topic
  • Gadsen

Posted July 07, 2003 - 01:24 PM


OK, I was looking in some literature and it showed the WR426 HP rated at 47HP @ 9000 rpm. Does anyone know what the YZ426F had then. And if you do all the YZ mods, ie cam timing, grey wire, throttle stop, air box... etc, will this bring the WR specs to the YZ? Or does this sould like a HP rating after the mods?

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  • SFO

Posted July 07, 2003 - 01:38 PM

#2 444.htm

this is a stock '01 yz-426 baseline run and a wr 426 with a big bore kit, pipe, and mild head work.

A wr that has all the free mods will run just like a yz.
This is my experience.
I have seen the same results from the 250f yz vs a modded wr as well.


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