Sure. I have heard all kinds of stories about guys running these with no problems. Then, if you stick around them long enough, you find out the truth!

Wiseco's just plain suck. Their pistons shrink and swell so much, it almost takes an act of God to get them to work.

I found this out lately, as one of the local machinists here does a whole lot of overbore work. In his statements, almost ANY of the other top brand piston makers are a much better choice, even if you have to get the pistons custom made.

My previous NSR was running Wiseco's as an overbore kit. The pistons were WAY lighter, and the bike ran like a raped ape. BUT... I never could run down a straight for more than 20 seconds WOT without it four-point seizing. And the last time happened after 100 miles of break-in and 3 hours of warm-up.

I warned one of my coworkers about this. Last weekend his wife seized his Wiseco-pistoned Banshee out in the 'dunes...
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Paul Herr
'88 FZR4/GSXR/YZF Frankenbike
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