A sport bike version of the 390 Duke, the KTM RC390 was presented at the 2013 EICMA motorcycle show in Italy, though most details had been leaked a few weeks earlier.[8][22] The 2014 model year road racing style bike has the same 373 cc engine making a claimed 44 hp ( 33 kW) @ 9, 500 rpm with a claimed weight without fuel of 147 kg ( 324 lb) . With a fuel capacity 10.0 l; 2.20 imp gal ( 2.64 US gal) , [23] the wet weight would be 154.2 kg ( 340.0 lb) .[21] The frame of the RC is a different single piece trellis frame than the Duke, which KTM says is stiffer than the 390 Duke.[24] The tires are Metzeler 110/70ZR17 front and 150/60ZR17 rear.[24] Where the Duke has a steering head angle of 65° ( or 25°rake) , the RC’s fork has a steeper 66.5° head angle ( or 23.5° rake) .[20] The 1, 340 mm ( 53 in) wheelbase is 27 mm ( 1.1 in) shorter than the Duke. The same ByBre disc brakes with ABS, and WP 43 mm front fork and rear shock are used on the RC390.[23][24]
KTM added a racing version of the RC390, theRC390 Cup for use by motorcycle racers ages 13 to 21 in the ADAC Junior Cup, a MotoGPevent. The RC390 Cup has no lights or mirrors, and no ABS to reduce weight, and an upgraded WP suspension, fully adjustable front and rear. The engine is detuned to a 38 hp ( 28 kW) with a block-off plate, and has an Akrapovic exhaust.[25][26]
Motorcycle Consumer News tests of the RC390’s power were 30.04 kW ( 40.29 hp) @ 8, 600 rpm and 32.92 N·m ( 24.28 ft·lb) torque @ 6, 800 rpm, with a wet weight of 165.3 kg ( 364.5 lb) [18] They found a top speed of 167.4 km/h ( 104.0 mph) , with an accele_45ration from 0 to 1/4 mi ( 0.00 to 0.40 km) in 14.02 seconds at 147.87 km/h ( 91.88 mph) , 0 to 97 km/h ( 0 to 60 mph) in 5.53 seconds, and braking from 97 to 0 km/h ( 60 to 0 mph) in 43.1 m ( 141.3 ft) .The tested fuel economy was 4.17 L/100 km; 67.7 mpg-imp ( 56.4 mpg-US) .
Cycle World’s road tests of the RC390 also showed a top speed of 167 km/h ( 104 mph) , but faster accele_45ration 0 to 1/4 mi ( 0.00 to 0.40 km) in 13.67 seconds at 147.87 km/h ( 91.88 mph) , and from 0 to 97 km/h ( 0 to 60 mph) in 4.6 seconds. Braking performance and fuel economy were not so far off, at 97 to 0 km/h ( 60 to 0 mph) in 43.1 m ( 141.3 ft) , and 4.1 L/100 km; 70 mpg-imp ( 58 mpg-US) . Cycle Worlds’s tested power figure was 29.9 kW ( 40.1 hp) @ 8, 600 rpm, and torque was 34.4 N·m ( 25.4 ft·lb) .