[B]Does WR-400 have 5 Valev head?[/B]

Just wondering if the 98 WR 400 has the 5 valve head design...also would a 99 Grizzly have a 5 valve head? Thanks :)

Yes, all 1998 and newer WRs have a five valve head.

As for the Grizzly, if it is the 600cc I don't think it does. But, the Grizzly 660, which came out in (I think '02 or '03), has the same engine as the Raptor 660 which has a 5 valve head.

Yes, and I think they were stainless valves, then when the 426 showed up, they were all titanium

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