Stark Varg SM

[Theo]

Rear tyre in 140mm (same size as on a 50cc 2T I had 20 years ago), where I put a 160mm on mine.

I would have expected a 150 or 160.
At least here in Italy, but I bet in France and in many other countries, too, the vehicle registration certificate lists the allowed tyre sizes and usually there is more than one; hopefully, they allow bigger tyres to be used.
They also use a 4.5" rim according to the Cycle World's article, which is a smart choice IMO. I tried a Michelin Power Pure 2CT on a 4.25" rim years ago and I liked it; I thought that probably a 4.5" rim would have still fitted without problems and would have worked better...

On Stark's site they have written that the SM shares the same frame of the MX 1.2.

 

[Bodo]

"Another difference between the SM and most modern motorcycles with electronic rider aids is that the Varg doesn’t have any. No traction control, no ABS, no six-axis IMU, and no traditional modes like Rain, Road, or Sport. Despite being marketed as a street-legal bike, it’s homologated as a dual sport in Europe, so it doesn’t have to meet street-based requirements for the region."

From Cycle world first ride who confirm the range as well

Stark Future Varg SM First Ride

Stark Future’s Varg motorcycles have already made an impact in their respective market segments. Now, the SM, a supermoto-style machine, joins the fun.

www.cycleworld.com

Good article, though I believe that the freedom to omit ABS for the EU is down to the bike being homologated as L3E-A1 'light motorcycle <125cc'; dual sport isn't even a vehicle class.
ETA: they could be right, just named it oddly. There are indeed vehicle classes for Enduro- and Trial motorcycles, which are exempt from mandatory ABS:

Regulation - 168/2013 - EN - EUR-Lex

eur-lex.europa.eu

Also this part doesn't make sense to me

Because the motorcycle is street legal, not only does the bike come with a charging stand similar to the units included with the MX and EX, but it also comes with a 3.3kWh portable charger that fits in a backpack and works in a normal AC outlet or Level 2 charging station ..

While the SM is shown on the charging stand in some Stark images, Stark never mentions that it comes with TWO chargers; only ever mentions the portable charger. Also, any relation between street legality and charger type doesn't make sense: the street legal EX comes with the charging stand, the SM comes with the portable charger instead.

 

[Bernardo]

if the geometry didn‘t change the 140 will be the only one allowed.
i put a 150 into my ex and there is a (too) small gap to the chain.
a 160 will be to much for the authorities.

 

[Erwin P]

EU law doesn't make a difference between "Dual Sport" or any other bike. The big difference is it being a 1 person instead of allowing a passenger.
1 person bikes don't need to have ABS (the only mandatory item of the above list) by law. There are other than Enduro or Dual Sport bikes that also allow to be sold without having ABS.

Edit: I have a 160 rear tyre. It is so wide sometimes it makes contact with the chain. No way an OEM is selling that from the factory.