Join Date: Apr 2006
Location: Amity, AR., USA
far back as I remember (started paying attention in about '92) the engines are the same within the year models. Same bore/stroke ect.
The RR was mostly solo tail, suspension valving, air box type mods...But it has been a decade or so. The last years of the ZX7 had engine updates to the cam chain tensioner, head, carbs, and intake but seems like that was only in the last 2-3 years 2001-2004 ish.
Been there, crashed that, Fixed again, sold it!