WR400 cam question.
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Posted April 15, 2005 - 03:07 PM
I have a 1999 WR400 with some modifications, and I would like it to "breathe" a little bit better, has anybody tryed a YZF426 intake cam YZF450 exhaust cam combination? The yzf426 head is identical to the 400, so I know the cam will fit, I'm just wondering how much power it would add.