I honestly don't know, Elipten. I read that some certified Honda sales rep stating that question was part of some test he was subjected to.
Whether fact or otherwise, unknown.
Moini
@ Paulb
What about the CBX?
the third or fourth letter is independently from the motorconcept
(in most cases

)
in a few cases it describe the concept of the bike, but it won't follow a rule,
sometimes it stands alone like CBX =one and only 6 cylinder bike
Look at CBR= for Road; RR=Road Race ;T= for Twin.........
I think it's one of these japanese mystery we will never got an idea
But what's about a HD VRSCDX???
Is Milwaukee infiltrated by japanese ideas??
Best regards from northern germany
T

M