the Go 28 6 port is closer to a MT 28 then a Ninja 28...the Ninja is a short stroke long rod 28...the Go is a long stroke short rod 28........... the Ninja is really a bored out .21...the GO is a typical long stroke 28............................ Guys do not underestimate the Picco/Jammin engines.......I run both Go and Picco engines, and to dismiss the Picco's like your doing is not very accurate on how these motors run.........

THere is no way the Go 28 6 port is going to have the powerband and legs of a NInja 28, the internal geometry is not there ... the GO 28 is identical pretty much to the older MT style 28's, definitely not a new gen 28 sorry to say..... I will gladly have one dynoed if you want to see its powercurve next to a Ninja 28....

I am not knocking the GO 28 either, but the Ninja 28 is an amazing 28 with a killer top end no other 28 I have seen even comes close to........i mean the Ninja is built to rev....

as I say I am not knocking Go engines, as I myself have run Go engines and love them.. But the Ninja 28 is a pretty special .28 with unique internal geometry which allows it to rev higher then a typical 28 design.... I can definitely see the GO 28 6 port being a good matchup to a Jammin 28 as far as powerband and RPM, as they share the same bore/stroke and nearly identical timing profiles...The Ninja on the other hand is quite a bit different then the Jammin or Go..