The 250sx has about 47 hp and does 71 mph (stock).
Transmission: Motorex Top Speed 15W50
With stock gearing 71 mph.
i'd say its about 120km/h
With stock gearing 70-73 mph
With stock gearing 70-72 mph.
For a 250 SX KTM recommends Motorex Top Speed 4T 15W50 (.7 L). For a 250 SX-F KTM recommends Motorex Power Synt 4T 10W50 (1.1 L).
KTM recommends Motorex Top Speed 4T 15W50 oil 0.7 L
According to the 08 KTM Tech Bulletin, .3L of Motorex Top Speed 4T 15W50
about 120 - 130 mph
90mph
110mph
my '03 250SX has been clocked at 82. It has some work done, but 70 easy.