0.7 L Motorex Top Speed 15W50
1250 CC's.
your crank case does not take oil at all. your transmission however will take usually 1 to 1.5 quarts of approved transmission oil.
You can find that info , as well as a lot more, here: http://motocross.transworld.net/2003/07/09/2004-ktm-125-sx-200-sx-250-sx-and-525-sx/
KTM recommends Motorex Power Synt 4T 10W50
KTM recommends Motorex Top Speed 4T15W50 for the 125SX.
The KTM 85 is faster but much more difficult to take care of.
yes there is the ktm ktm 85 ktm 110 ktm 125 ktm 150 ktm 250 ktm 500
5w30
my sons 05 ktm 65 sx has 5
In my case from NC to KTM it takes 23 days.
96 miles
500 ml