Q. Is KTM Duke 390 better or RC 390 better in speed and economically

Both have same parts so maintenance on both is exactly the same. Only the faring on the RC will cost you more.Both have the same engine and power. Duke will win a drag race because of the lighter weight.RC will win on the track because it is more committed to the track, better top speed and better aerodynamics.Duke is a favorite on the streets because its more comfortable, better for touring, everyday commuting and has a bigger tank.

I think rc 390 for racing because it has windshield it is very helpful for riding on highway because if you ride bike on highway so fast many windblast came so windshield Stop them so i think rc 390 but i personally like duke 390 specially design and power both bike are good

Both the bike are different from each other. performance is almost same but RC is more stable on high speed as it had better aerodynamics, economically both the bike are same. though duke is lighter that RC so performance will be different of course