MotoSpecs

2015 KTM RC 390 Specifications

Sport • Specs last verified 13 July 2026

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2015 KTM RC 390 Overview

For 2015, KTM offers the RC 390 as a sport motorcycle with 373 cc on tap. The 2015 KTM RC 390 is built around a Four stroke, single cylinder. DOHC with finger followers, 4 Valve per cylinder engine, a compression ratio of 12.6:1. Out on the road, the RC 390 delivers 32 kW @ 9500 rpm of peak power and 3.6 kgm /35.3 Nm @7250rpm of torque. In everyday use, the 2015 RC 390 tips the scales at 139 kg, carries a 10-litre fuel tank, offers a seat height of 820 mm and spans a 1340 mm wheelbase. That's roughly 63.7 kg lighter than the average sport motorcycle in our database. Every technical detail, from suspension travel to tyre sizes, is covered in the full 2015 KTM RC 390 spec sheet below.

2015 RC 390 - Pros & Cons

Strengths

  • Strong power output: Peak output on the RC 390 is 32 kW @ 9500 rpm and 3.6 kgm /35.3 Nm @7250rpm of torque - strong numbers for what it is.
  • Fuel injection: No choke, no jetting, no altitude compensation to think about - fuel injection just works across a wider range of conditions than carburetion.

Considerations

  • Tall seat height: A 820 mm seat puts flat-footing out of reach for a lot of riders - sit on it in person before committing.
  • Modest fuel capacity: A 10-litre tank keeps things light but means budgeting for more frequent fuel stops on any longer ride.
  • Chain final drive upkeep: A chain drivetrain is the most common setup in its class, but it's also the one that demands the most regular hands-on maintenance.

Wear Points & Servicing Notes

Cooling system servicing

With Liquid Cooled, thermal management is largely automatic, but the coolant has a service life of its own - replace it on the manufacturer's interval to protect the water passages and thermostat.

Fuelling & injector care

Fuelling on the RC 390 comes from Bosch Injection. Cold starts and throttle response stay consistent across altitude and temperature, the main practical edge over a carbureted equivalent.

Brake disc and pad wear

Single 300 mm disc 4 piston radial caliper up front provides the primary stopping power; inspect disc thickness and pad wear at each tyre change to catch scoring before it becomes a rotor replacement.

Suspension condition on used examples

Suspension duties are handled by WP Suspension Up Side Down up front and WP Monoshock at the rear. Weeping fork seals aren't a dealbreaker on a used bike, but they're a fair basis for negotiating price.

Final drive maintenance

Chain final drive on the RC 390 means routine lubing and tension checks are part of ownership - skip them and sprocket wear accelerates noticeably.

Frame & chassis check

The Tubular space frame made from steel, powder-coated chassis holds up well with normal use; on a used bike it's still worth checking the head-stock and swingarm pivot area for impact damage or corrosion.

Low-speed handling

The RC 390's 139 kg kerb weight makes low-speed control noticeably less effort than on a heavier machine.

RC 390 - Buying & Maintenance Guide

What to check before buying

A pre-purchase check on the 2015 KTM RC 390 should cover the same ground every time: service history, chain and sprocket condition, and any oil seepage around the casings. Start it from cold if you can - a well-kept RC 390 settles to a smooth idle within seconds.

Oil and filter changes

Oil changes are the cheapest insurance you can buy for a RC 390's engine - keep to the manufacturer's interval rather than stretching it. Use the viscosity grade the manual specifies, not whatever's on sale.

Fuel system care

Injector systems like the RC 390's hold up well with basic care - decent fuel, an occasional cleaner additive, and draining old fuel before any layup longer than three months.

2015 KTM RC 390 - Frequently Asked Questions

What engine does the 2015 KTM RC 390 have?
The 2015 KTM RC 390 uses a Four stroke, single cylinder. DOHC with finger followers, 4 Valve per cylinder engine with 373 cc of displacement. It is liquid cooled.
How much does the 2015 KTM RC 390 weigh?
The 2015 KTM RC 390 weighs 139 kg. This is the manufacturer's dry figure.
How much power does the 2015 KTM RC 390 make?
The 2015 KTM RC 390 produces 32 kW @ 9500 rpm of power and 3.6 kgm /35.3 Nm @7250rpm of torque. These are peak figures.
What is the fuel tank capacity of the 2015 KTM RC 390?
The 2015 KTM RC 390 has a 10-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 166-200 km between stops.
Is the 2015 KTM RC 390 suitable for shorter riders?
The 2015 KTM RC 390 has a seat height of 820 mm. This is towards the tall end of the spectrum and will require most riders under 175 cm to tiptoe at stops.
What brakes does the 2015 KTM RC 390 have?
The 2015 KTM RC 390 uses Single 300 mm disc 4 piston radial caliper at the front and Single 230 mm disc 1 piston caliper at the rear.
What tyre sizes does the 2015 KTM RC 390 use?
The 2015 KTM RC 390 runs 110/70 R17 front and 150/60 R17 rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.
What gearbox does the 2015 KTM RC 390 have?
The 2015 KTM RC 390 is fitted with a 5 Speed transmission.

KTM RC 390 Spec Evolution

The KTM RC 390 was produced across 8 model years (2014-2022). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.

Specification 2014 2015 2016 2017 2018 2019 2020 2022
Dry Weight 139 kg / 306.4 lbs 139 kg / 306.4 lbs 139 kg / 306.4 lbs 149 kg / 328.5 lbs 149 kg / 328.5 lbs 149 kg / 328.5 lbs 149 kg / 328.5 lbs 155 kg / 341.7 lbs
Engine Detail Four stroke, single cylinder. DOHC with finger followers, 4 Valve per cylinder Four stroke, single cylinder. DOHC with finger followers, 4 Valve per cylinder Four stroke, single cylinder. DOHC with finger followers, 4 Valve per cylinder Four stroke, single cylinder, DOHC with finger followers, 4 Valve per cylinder Four stroke, single cylinder, DOHC with finger followers, 4 Valve per cylinder Four stroke, single cylinder, DOHC with finger followers, 4 Valve per cylinder Four stroke, single cylinder, DOHC with finger followers, 4 Valve per cylinder Four stroke, single cylinder, DOHC with finger followers, 4 valves per cylinder
Seat Height 820 mm / 32.2 in 820 mm / 32.2 in 820 mm / 32.2 in 820 mm / 32.2 in 820 mm / 32.2 in 820 mm / 32.2 in 820 mm / 32.2 in 824 mm / 32.4 in
Fuel Capacity 10 Liters / 2.64 US gal 10 Liters / 2.64 US gal 10 Liters / 2.64 US gal 10 Liters / 2.64 US gal 10 Liters / 2.64 US gal 10 Liters / 2.64 US gal 10 Liters / 2.64 US gal 13.7 Liters / 3.6 US gal
Frame Type Tubular space frame made from steel, powder-coated Tubular space frame made from steel, powder-coated Tubular space frame made from steel, powder-coated Tubular space frame made from steel, powder-coated Tubular space frame made from steel, powder-coated Tubular space frame made from steel, powder-coated Tubular space frame made from steel, powder-coated Steel trellis frame, powder coated and bolt-on subframe
Brakes - Front Single 300 mm disc 4 piston radial caliper Single 300 mm disc 4 piston radial caliper Single 300 mm disc 4 piston radial caliper Single 320 mm disc 4 piston radial caliper Single 320 mm disc 4 piston radial caliper Single 320 mm disc 4 piston radial caliper Single 320 mm disc 4 piston radial caliper Single 320 mm disc 4 piston radial fixed ByBre calliper
Brakes - Rear Single 230 mm disc 1 piston caliper Single 230 mm disc 1 piston caliper Single 230 mm disc 1 piston caliper Single 230 mm disc 1 piston caliper Single 230 mm disc 1 piston caliper Single 230 mm disc 1 piston caliper Single 230 mm disc 1 piston caliper Single 230 mm disc 1 piston floating ByBre calliper
Ground Clearance 179 mm / 7.0 in 179 mm / 7.0 in 179 mm / 7.0 in 179 mm / 7.0 in 179 mm / 7.0 in 179 mm / 7.0 in 179 mm / 7.0 in 158 mm / 6.2 in

Key Specifications

Engine

Four stroke, single cylinder. DOHC with finger followers, 4 Valve per cylinder

Power

32 kW / 43 hp @ 9500 rpm

Torque

3.6 kgm /35.3 Nm @7250rpm

Top Speed

Not published by manufacturer

Weight

139 kg / 306.4 lbs

Fuel Capacity

10 Liters / 2.64 US gal

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Full 2015 KTM RC 390 Specifications

Year 2015
Make Model KTM RC 390
Seat Height 820 mm / 32.2 in
Wheelbase 1340 mm / 52.7 in
Ground Clearance 179 mm / 7.0 in
Height 1267 mm / 49.9 in
Length 2002 mm / 78.8 in
Width 873 mm / 34.4 in
Dry Weight 139 kg / 306.4 lbs
Fuel Capacity 10 Liters / 2.64 US gal
Max Power 32 kW / 43 hp @ 9500 rpm
Max Torque 3.6 kgm /35.3 Nm @7250rpm
Displacement 373 cc / 22.7 cu-in
Engine Detail Four stroke, single cylinder. DOHC with finger followers, 4 Valve per cylinder
Bore x Stroke 89 x 60 mm
Compression Ratio 12.6:1
Cooling System Liquid Cooled
Fuel Induction Bosch Injection
Ignition Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment
Lubrication Forced oil lubrication with 2 Eaton pumps
Starter Electric
Clutch Wet multi-disc clutch / mechanically operated
Final Drive Chain 5/8 x 1/4" X‑Ring
Primary Drive Ratios 30:80
Secondary Drive Ratio 15:45
Transmission / Drive 5 Speed
Frame Type Tubular space frame made from steel, powder-coated
Suspension - Front WP Suspension Up Side Down
Suspension - Rear WP Monoshock
Steering Head Angle 65 °
Trail 100mm / 3.9 in
Wheel Travel - Front 120 mm / 4.7 in
Wheel Travel - Rear 150 mm / 5.9 in
Brakes - Front Single 300 mm disc 4 piston radial caliper
Brakes - Rear Single 230 mm disc 1 piston caliper
Tyres - Front 110/70 R17
Tyres - Rear 150/60 R17

Specifications are compiled from manufacturer documentation and cross-referenced technical sources, and corrected on an ongoing basis. Spot an error? Let us know.

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