The KTM RC390 is a sport motorcycle designed for high performance and agility. The 2021 model of the KTM RC390 has a 373 cc single-cylinder engine that produces 44 horsepower and 26 lb-ft of torque. It has a six-speed transmission and a trellis frame made of steel.
The bike has a wet weight of 330 lbs and a fuel tank capacity of 3.7 gallons. It also has a digital instrument panel, LED headlights, and a hydraulic disc brake system with a four-piston caliper at the front. The KTM RC390 has a top speed of approximately 150 mph.
| MOdel | RC390 |
| Release year | 2021 |
| release month | 2 |
| Market | global |
| Overall length (mm) | 1995 |
| Width (mm) | 705 |
| Height (mm) | 1099 |
| Wheelbase (mm) | 1355 |
| Minimum ground clearance (mm) | 178.5 |
| seat height (mm) | 820 |
| Vehicle weight (kg) | 158 |
| Seat | 2 |
| Engine | 4 stroke |
| number of cylinders | 1 |
| cylinder array | single cylinder |
| cooling method | water cooling |
| displacement (cc) | 373.2 |
| Cam/valve drive system | DOHC |
| Number of valves per cylinder | Four |
| Inner Diameter (Cylinder Bore) (mm) | 89 |
| Stroke (piston stroke) (mm) | 60 |
| Compression ratio (:1) | 12.5 |
| Maximum output (kW) | 32 |
| Maximum power (PS) | 44 |
| Maximum output speed (rpm) | 9500 |
| Maximum torque (N・m) | 35 |
| Maximum torque rotation speed (rpm) | 7250 |
| Fuel supply system | fuel injection |
| Fuel tank capacity (L) | 9.5 |
| Fuel tank reserve capacity (L) | 1.5 |
| Fuel (type) | high octane gasoline |
| Engine starting method | self starter |
| ignition device | Full transistor type |
| Spark plug standard installation/model | LKAR8A-9 |
| Necessary number of spark plugs/total | 1 |
| Installed battery/model | YTX9-BS |
| battery capacity | 12V-8Ah |
| Engine lubrication system | Wet sump type |
| Engine oil capacity*Total capacity (L) | 1.7 |
| Recommended engine oil (SAE viscosity) | 10W-40 |
| Drain bolt nominal diameter (mm) | 24.0 |
| Clutch type | Wet/multi-plate |
| Transmission type | Return type, 6-speed |
| Transmission/operation method | foot shift |
| Power transmission system | chain |
| Number of sprocket teeth/front | 15 |
| Number of sprocket teeth/rear | 45 |
| chain size | 520 |
| Frame model | steel trellis frame |
| caster angle | 66.5° |
| Trail amount (mm) | 88 |
| Brake type (front) | hydraulic disc |
| Brake type (rear) | hydraulic disc |
| Compliant standards for brake oil | DOT 4 |
| Suspension system (front) | telescopic fork |
| front fork type | inverted fork |
| Front suspension stroke (mm) | 125 |
| Suspension system (rear) | swing arm |
| Number of shock absorbers (rear) | 1 |
| Rear suspension stroke (mm) | 150 |
| tire (front) | 110/70ZR17 |
| Tire (front) structure name | radial |
| Tire (front) load index | 54 |
| Tire (front) speed symbol | W. |
| Tire (front) type | tubeless |
| tire (rear) | 150/60ZR17 |
| Tire (rear) structure name | radial |
| Tire (rear) load index | 66 |
| Tire (rear) speed symbol | W. |
| Tire (rear) type | tubeless |
| Wheel rim width (front) | 3.0 |
| Wheel rim width (rear) | 4.0 |
| Tire standard specified air pressure (at passenger capacity/before) | 2.00 |
| Tire standard specified air pressure (at passenger capacity/after) | 2.20 |
| Headlight rating (Hi) | 65W |
| Headlight type (Hi) | H9 |
| Headlight rating (Lo) | 55W |
| Headlight type (Lo) | H11 |
| tail light type | LED |
| Speedometer display format | Digital |
| Meter display: gear position | Yes |
| Meter display: fuel gauge | Yes |
| Meter display: engine tachometer | Yes |
| Meter display: Clock | Yes |
| Meter display: Twin trip | Yes |
| Vehicle equipment: Anti-lock brakes (ABS) | Yes |
| Vehicle Equipment: Slipper Clutch | Yes |