01. Engine & Exhaust
Engine
The KTM RC 390 uses the proven 373 cc liquid-cooled, single-cylinder four-stroke engine to maximum effect. Revised engine mapping, improved torque figures, and smoother, hard-hitting power delivery means this state-of-the-art powerplant churns out unmatched performance.
Performance
Thanks to a larger airbox, increased torque, and ultra-slick throttle response, the KTM RC 390 rockets off the line and into pole position. The Ride-by-Wire system also means it steps onto the podium with more precise engine mapping, traction control, and the added benefit of optional Quickshifter+.
Cylinder Head
Four valves, double-overhead cams and, ultra-hard carbon-coated cam levers mean the cylinder head on the KTM RC 390 produces more power but retains its legendary reliability.
Exhaust
Taking its design cues from the MotoGP™ RC16, the exhaust of the KTM RC 390 boasts stainless steel headers with an aluminum muffler, which not only look the part but give the KTM RC 390 a distinct, throaty rumble as it charges through the gears and onto the redline.
Slipper Clutch
Preventing the rear wheel from locking up under hard deceleration, the slipper clutch opens up when the engine back-torque becomes too high, but it also closes with the force of the clutch springs when you get onto the throttle. This stops unwanted rear wheel chatter and ensures maximum control - while also allowing the clutch lever to be actuated with hardly any pressure at all.
Cooling
Improved airflow throughout the engine allows the KTM RC 390 to run cooler, giving it the optimal performance temperature needed to hit the apex, lap after lap.
Engine
Performance
Cylinder Head
Exhaust
Slipper Clutch
Cooling
