I have the KTM 990 Adventure front suspension on my own Twin
It makes the swap a lot easier if you use a complete KTMfront end from either the 950 Adventure, 990 Adventure, or late 640 Adventure.
Use the KTM upper and lower fork yokes. The 950 and 640 bottom yoke does not have asteering stop, but the 990 does
The complete KTM front end can be used:
Fork Yokes
Forks
Wheel
Brake Lines
Brake Discs
Master Cylinder
Brake Lever
Brembo Calipers
Mudguard
The top Fork Yoke will accept the Africa Twin Ignition unit
The bottom Fork Yoke of the 990 Adventure has the steering stop
You'll need to machine a new steering stem - or buy one from Rugged Roads which utilises the standard Honda bearings.
Whichever forks you have – they will need to be resprung –so it makes sense to have them serviced – new bushs, new seals, etc
WP still offer upgrade springs for the Adventure forks –either .50, .52, or .54 – (the standard in the 950 and 990 is .48) – or if youneed harder springs then .56 and .58 are available from various custom springshops.
You will lose the speedo cable unit - so you'll need to decide on what to use as an alternative (Koso RX-2N is good)
I’m sorry this is in English, but I’ll ask Breeze nicely tosee if he can translate this into Italian.