Originally Posted by James Adams
NTX is a name they used previously a few decades ago for a small block (?) on/off road bike, so I guess they're giving the Stelvio a heritage with by adding the NTX moniker.
Yep V65NTX from the late 1980s, a development of the V65TT: the NTX had an integrated fairing inspired by the Paris-Dakar craze in Europe at the time, a 32 litre tank, taller gearing and longer-travel suspension than its more dainty sister; both had proper 21" wheels too.
There was also a 350 version, to cater for a quirk of European licencing.
Later a 750 NTX was available and had features like an enclosed front disc; it was widely used by Italian police and Nato.