It is rated at 40 hp so I would guess stock it would be in the 60-65 mph range stock.
ktm 85 top speed is over 144 mph
The KTM 144, a lightweight two-stroke motocross bike, typically reaches a top speed of around 60 to 70 mph (approximately 97 to 113 km/h). Its speed can vary based on factors such as rider weight, terrain, and modifications. Designed primarily for off-road performance, the bike excels in acceleration and agility rather than sheer top speed.
90mph
110mph
The Top Speed Is Around 80 mph
60 mph
About 70mph
90mph
KTM recommends Motorex Top Speed 4T 15W50
With stock gearing top speed would be 50-52 mph.
The top speed of a 2009 KTM 150 XC is approximately 65-70 mph, depending on factors such as rider weight, terrain, and maintenance.
KTM recommends .5L of Motorex Top Speed 4T15W50.