I bought my Ktm duke 250 on 28th march 2017
i rode the bike about 11000 km,
looks wise its awesome, Performance is phenomenal..
I live in West Bengal here service is not good,If i order any part they ordered it and it came in around 1 month or later sometimes part was wrong also.
if i say about some cons: firstly bike has some vibes in front right side footpeg,seats,and in the side cowl if you rev it 7k lr 8k rpm .
secondly chain sprocket is just bad i lube it many time actually i lube it in every 200 km but chain has some bad noise like 'khat khat' i showed it many times but they did not solve it they said "it is normal"..
thirdly bike is not stable in higher speed, braking is not that great also.
Otherwise bike is perfectly fine and awesome.
if you want a naked sport bike and you just learned biking from a 150cc bike you can trust the bike and go for it..
Tips for KTM 250 Duke
Lube it in every 200km.
maintain tyre pressure front 30psi
and back 35 psi.
general checkup in every 2 months
service it in every 6 months or 5000km
use motul 300v after 1 year or after 3rd service
use Osram night breaker h4 bulb for good light and adjust the light according to your suite..
And respect the bike and happy riding ..