I just read again an email I wrote to Denso Japan on the V.
date5 December 2008 14:43
subjectPlugs for Kawasaki Versys
hide details 05/12/2008 Reply
Kawasaki Versys 650cc, 2cylinders.
We suggest IU27 Iridium Power ofr your nice Kawasaki.
IU27 dimensions are 10mm thread diamter, 19mm thread lenghth,16mm Hex.
IU27 ha world smallest 0.4mm Iridium alloy center electrode wich enhances your MC
As IU27 has golden terminal nut on top. please remove it by hand when istallation.
If IU27 is hard to find, IU27A is also applicable.
We attach IU27 picture ofr your reference.
(See attached file: IU.jpg)
Hope this clears the air, Best Regards.