If we look at the entire KTM range you'd see a common binding factor : gear box with an agricultural character, small vibs(not unbearable) which are dowsed when rpms rise, sharp fuelling leading to a bit of jerkiness at low rpms , delicious torque and generally having dollops of character

Refinement is never associated with KTM bikes and in fact Europeans/ Americans go for a KTM(or may be a duc) after being tired of the super refined/ well behaved/dependable Jap bikes.
KTMs are also classfied as being a bit more maintenance requiring, less thanthe ducs of course, but more than the ultra dependable Japs.
The Indian made dukes confirm to all of these characteristics IMO.
The real issue to me is relatively inferior(read made of lesser materials) parts which Bajaj may have chosen to maximise profits. This quality might have suited the regular 150 cc Indian fare, but the same parts gone inside a lot more powerful and stiffly strung Duke give up very early.
The nut threading gives up, oil starts leaking out from engine, small amount of coolant overflows out, mags getting cracked(in case if 390 and NOT the 200 in general) , fan winding gone in about 10-15 k, clutch plates needing two replacements in 25 kms, these are real quality issues to me.
Btw I believe the RC series would have less issues , at least no oil leaks. No one would notice small leaks thanks to the big fairing





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