Motorcycles are not measured in amounts of horse power. The KTM SX65 2014 edition has a cc of 65. It has six speeds.
With stock gearing top speed would be 50-52 mph.
You did not specify what year, a 08 KTM 65 SX requires .5L 2002 sx65 to a 2008 sx65 according to my service manual only uses 300ml of gearbox oil. 2009 to 2011 uses 500ml of gearbox oil.
That's a matter of personal opinion. I actually have one of each, I ride the KTM most of the time now.
Possibly if gearing were changed. With stock gearing top speed would be 50-52 mph.
i do every other ride but you should do it every 16 or so hours
Get a KTM
yes there is the ktm ktm 85 ktm 110 ktm 125 ktm 150 ktm 250 ktm 500
ktm
.7 L
KTM recommends 1.35 L of Motorex Power Synt 4T 10W50.
Kx 100s are easy and cheep to fix. Ktms are great motorcycles but they can be more expensive to repair. Kx 100