The Ultima RB5 body shell is a contrast to that of its sibling, the ZX-5.  Whilst that shell is all about classic lines and simplicity – the RB5 is on the cutting edge of what’s considered ‘cool’.  The swoopy design almost outdoes the likes of JConcepts, who are known for this style of shell.

The  sides of the shell are quite high, and provide decent room for the electrics.  The sides have plenty of interesting swoops, raising up to direct air flow up toward the wing at the rear.   The front of the RB5’s shell is where things are pretty unique – the front window being shaped a little like the small front air scoops from companies like JConcepts.  I can’t comment on the effectiveness of this front window, but I can say that we got several comments about how the shell looked to have taken a nasty impact or  melted.   I love everything about this shell – apart from that front window, which slightly detracts from the rest of the design - at least it does for me.

The RB5 comes with window masks, the front having small cuts to enable it to better conform to the bulging window.  We didn’t use the masks since the shell was being painted to match Stu’s other oOple review car, the TRF 501X.  The resulting job looks great I have to admit. A large wing is included, and can be cut down to fit track conditions / personal preference.