600 Inline 4's go 170 mph these days. Almost 280 kph I believe and they all do 0-60 in under 4 seconds, nothing slow about them.
Someone link this dude to some OTB goodness.
edit; damn did you pay to get a premium membership at twowheelforum? I feel bad for you, that place is deader than Bernie Mac.
check out
this thread NTS made over there with a lot of good info in it.