The 2004 ktm 450 EXC has 48Hp
.5 L
I am assuming you mean gear oil, KTM recommends .7L of Motorex Top Speed 4T 15W50.
48 hp
The KTM 85 is faster but much more difficult to take care of.
120mm under the top of the fork
500 ml
10w30 is what ktm recommend for a 2 stroke engine
i dont no tell me
Stock 04 250 EXC has29 hp.
Engine oil, KTM recommends Motorex ATF Super (Dexron II Gear Oil) Premix, KTM recommends Motorex 2T.
According to a KTM bulletin for 2006 models, .3 L. You can view the bulletin here: http://74.125.95.132/search?q=cache:rFOyaY4tY0EJ:www.ktmriders.nl/modules/downloads/KTM%2520Engine%2520Oil%2520Recommendation.pdf+gear+oil+for+a+KTM+65SX&hl=en&ct=clnk&cd=3&gl=us