Unlike BMW's marketing strategy for the twin cylinder F6xx/F7xx/F8xxGS bikes, the two 790 Adventure models are exactly the same in engine mapping, engine performance, gearing and wheel types.
There are no factory-fitted KTM options, everything is retrofitted at dealers.
The windshield, seat and front mudguard are different on the two models but if you so desire you can buy the part from the other model and swap it in (windshield is £70-80, seat is £120 and mudguard is £60). Ditto the different shaped mirrors and the different coloured hand guards.
The tubeless tyres are different brands, but my dealer is doing a free-of-charge swap of the 90-10 Avon Trailrider tyres from my 'non-R' for a set of 50-50 Karoo 3 tyres from the 'R'.
The 'R' has an advanced Rally Mode option but you can add that to the 'non-R' model, either at the time of purchase or later.
So the
ONLY permanent difference between the two bikes is the suspension; the 'non-R' has shorter, non-adjustable suspension and the 'R' has higher, adjustable suspension. And of course this affects the ground clearance and seat height.
Dakar rider Chris Birch describes the bike as a modern take on the old KTM 950 Super Enduro, but
"with a lower seat height, all the electronics and good fuel range." The general opinion amongst test riders is that KTM has created a new category of adventure bikes and that even the standard 'non-R' model is superior off-tarmac to the Triumph Tiger 800 tiger, the BMW F850 GS and the Honda Africa Twin. On-tarmac might be a different story, so await road tests with more insight.
The 'non-R' is likely to be the better adventure tourer. Obviously someone over 1.85m (6') might go for the 'R' together with the optional higher seat purely for the legroom, but it seems there's a lot of shorter people out there who are planning to buy the 'R' even though the bike won't actually get to see the rough stuff that the suspension is intended for.
I've been following the reports from the press launch last week in the Erfoud/Merzouga area and the video linked below is the best I've seen with a lot of 'insider insights'.