KTM RC390 (2014 - on) Review

At a glance

Owners' reliability rating: 4 out of 5 (4/5)
Power: 44 bhp
Seat height: Medium (32.3 in / 820 mm)
Weight: Low (324 lbs / 147 kg)

Prices

New £4,999
Used £2,500 - £4,900

Overall rating

Next up: Ride & brakes
3 out of 5 (3/5)

After all these years the KTM RC390 is still the sharpest A2 licence weapon out there. Think of it as a Moto3 racer for the road…sort of, or maybe the spiritual successor to the 250cc two stroke and 400cc four-stroke pocket rockets of the late 80s and early 90s.

Its single cylinder motor is punchy, but friendly and it handles well enough to run rings around its rival in the corners. Light and accurate it’s the perfect tool in which to learn your cornering craft (it even had its own BSB-supporting race series: the KTM RC390 Cup), but it’s also friendly for everyday riding, can handle long journeys without breaking a sweat and is decent on fuel.

It's isn’t all orange ice cream with sprinkles, though because it suffers poor brakes, a hard seat, sloppy gearbox and iffy build quality in places, especially compared to its Japanese competition.

Updated in 2017, we hoped it would get the same top-to-toe overhaul enjoyed by the vastly improved naked 390 Duke the same year. Its naked sibling had better build quality, a smoother engine, crisper handling, stronger brakes and a higher level of equipment. Instead the RC390 only got a handful of Euro4-enforced tweaks, including ride-by-wire, a side-exit exhaust, new bellypan, adjustable levers and a bigger front disc.

But despite its ills the KTM RC390 is still a sought-after piece of kit for restricted licence holders and well-looked-after examples hold their value reasonably well.  

Watch: KTM RC390 video review

Ride quality & brakes

Next up: Engine
3 out of 5 (3/5)

Laid out like KTM’s Moto3 racer, the RC390 has a lightweight tubular steel frame, aluminium swingarm and WP suspension – chunky non-adjustable 43mm upside forks up front and a single shock, adjustable for preload at the rear.

Although relatively stiffly sprung the damping at both ends is soft, especially at the rear but it makes for a comfortable ride and combined with its light weight (just 147kg dry) it’s easy for the less experienced to jump on and ride the wheels off it, which is what the RC390 is all about. 

It’s perfect for learning the art of cornering and there’s always something electrifying about riding a small bike to its limit that you just don’t get on a bigger, more powerful machine. The key to peddling the KTM quickly is to maintain momentum through corners, brake as little as possible (just as well – the single disc set-up lacks power), hold your breath and flick it on to its side.

Riding the KTM RC390 on the road

Despite its bouncy set-up the chassis is composed, there’s lots of ground clearance and things never get out of control, even when you’re bouncing off the kerbs on track. It’s only when you want to flick from side to side quickly you wish the suspension had slightly more control – something KTM addressed with the limited edition (500 built) RC390R, which had fully-adjustable WPs.

Controls are smooth and light and it’s easy to thread through traffic but ride the KTM a long way and you wish the bars weren’t quite so low and that the seat didn’t have all the cushioning of concrete. Fitting a more comfortable perch is a must if you’re going to do big miles, which it’s perfectly long-legged enough to do. On the flip side, those bars are set wide and the tall seat gives you lots of legroom, which makes it ideal for taller riders.

Aside from the front disc diameter growing 20mm to 320mm, which didn’t improve braking power by much, the chassis was left unchanged for its light 2017 refresh, which when compared to the new and improved 390 Duke of that year, made the RC390 feel old and refined at a stroke.

Riding the KTM RC390 on track

Engine

Next up: Reliability
3 out of 5 (3/5)

Lifted from the 390 Duke of the day, the RC390’s liquid-cooled, fuel-injected, six-speed, single-cylinder 373.2cc motor produced 44bhp and weighed just 36kg.

It’s a gem of an engine, if a little vibey. The original model had a smooth, friendly throttle, but after it gained ride-by-wire, Euro4 fuel mapping and a side-mounted exhaust (with a corresponding new bellypan), its throttle became snatchier. 

At low revs old and new RC390 motors are docile, but the KTM will still out-grunt its twin and four-cylinder A2 licence rivals. There’s an almost two-stroke-like step in the power at 7000rpm, which fizzles out around 10,000rpm, so you need to scream it through the gears and keep the throttle welded to the stop to really get going.

The KTM RC390 features a single-cylinder engine

But keep it pinned and it’ll quickly hit the magical ton and even pull clutch-up wheelies in first. It sounds great on the throttle, too, rumbling like a Moto3 weapon.

Ridden normally it’ll do around 63mpg, which will give a theoretical range of 138 miles from its tiny 10-litre tank, but after 120 miles the dash will be screaming at you to say you’ve run out, even when you haven’t.

Reliability & build quality

Next up: Value
3 out of 5 (3/5)

Made by KTM’s partners, Bajaj in India, the RC390 build quality is acceptable, but it has a more plasticky feel than its Japanese rivals, especially machines like the Honda CBR500R and Kawasaki Ninja 400.

We’ve experienced gearbox problems on test bikes before (jumping out of 4th gear) and owners' reviews of running hot in traffic, excessively loud cooling fans and general corrosion, aren’t uncommon.

A side-on view of the KTM RC390

Value vs rivals

Next up: Equipment
4 out of 5 (4/5)

New prices aren’t cheap, but RC390s tend to hold their value well, which is important on a machine you’re likely to trade up from, once you’ve moved onto an A licence.

It won’t cost the earth to run and insure, but if you’re willing to do without a fairing and clip-ons you get a lot more for your money with KTM’s own 2017-onwards 390 Duke - an altogether more polished and well-rounded A2 licence option.

The KTM RC390 is a rival to the Honda CBR500R, Kawasaki Ninja 400 and Yamaha R3

Equipment

4 out of 5 (4/5)

Standard equipment includes a four-piston Bybre radial front caliper, 10-spoke lightweight wheels, LED running lights, a multi-function LCD dash with a gear position indicator, WP suspension and racing seat hump made from a foam/plastic material that doubles up as a pillion perch. You even get backlit switchgear and nice detail touches including orange cable ties holding the wires in place.

The KTM RC390 gets back-lit switch gear

Specs

Engine size 373cc
Engine type 4v, single
Frame type Steel trellis and ali swingarm
Fuel capacity 10 litres
Seat height 820mm
Bike weight 147kg
Front suspension 43mm non-adjustable WP forks.
Rear suspension Single WP shock adjustable for preload.
Front brake 300mm disc with four-piston radial calipers. ABS
Rear brake 230mm single disc with single-piston caliper. ABS
Front tyre size 110/70 x 17
Rear tyre size 150/60 x 17

Mpg, costs & insurance

Average fuel consumption 82 mpg
Annual road tax £44
Annual service cost -
New price £4,999
Used price £2,500 - £4,900
Insurance group 15 of 17
How much to insure?
Warranty term 2 years unlimited mileage

Top speed & performance

Max power 44 bhp
Max torque 26 ft-lb
Top speed 105 mph
1/4 mile acceleration -
Tank range 180 miles

Model history & versions

Model history

2014: KTM’s A2 licence friendly (2015 model) RC390 arrives in dealers late October.

2017: Updated for Euro4 - ride-by-wire, side-mounted exhaust, new bellypan, 320mm front disc, adjustable levers.

Other versions

2018 RC390R. Limited run of 500 built. Still A2 licence-friendly, but with shorter intake trumpets for more performance. Full adjustable WP suspension, machined ali top yoke, clip-ons, flip-up brake and clutch levers.

SSP300 Race Kit also available comprising of over 230 individual parts, including titanium Akrapovic exhaust system, race ECU, STM slipper clutch, quickshifter, race wiring loom, spare wheels, sprocket selection, uprated cooling system and bodywork kit.

More KTM RC models

Owners' reviews for the KTM RC390 (2014 - on)

1 owner has reviewed their KTM RC390 (2014 - on) and rated it in a number of areas. Read what they have to say and what they like and dislike about the bike below.

Review your KTM RC390 (2014 - on)

Summary of owners' reviews

Overall rating: 4 out of 5 (4/5)
Ride quality & brakes: 3 out of 5 (3/5)
Engine: 4 out of 5 (4/5)
Reliability & build quality: 4 out of 5 (4/5)
Value vs rivals: 4 out of 5 (4/5)
Equipment: 5 out of 5 (5/5)
4 out of 5 Mental Performance for an under 500 cc!
28 July 2015 by Jesse Daniel Antony

Version: India

Year: 2015

Mental performance for under sub 600 cc motorcycle! The engine could've been a little more refined, torque comes in lumps, not a very smooth / linear feel as, say the Ninja 300. Very uncomfortable saddle for touring! Superb for the track! Brakes need some getting used to, not as sharp as you would expect a 300 mm rotor to be! Tires - Excellent for track + wet conditions (METZLER SPORTEC M5). A little too soft for everyday street riding, very low mileage (mine are about to almost die now). Front suspension is bang on! Just so perfect! Inverted 43mm telescopes The rear suspension is way too soft and bouncy. Putting in on the highest pre-load setting makes it just acceptable, but the damping could've been a lot better actually. The 82 MPG figure that MCN has given is not true. The highest MPG so far is 76 (while using not more than 25% of the throttle at all times), Done over 6000 miles so far - Avg mpg is 60 to 70 MPG.

Ride quality & brakes 3 out of 5
Engine 4 out of 5
Reliability & build quality 4 out of 5
Value vs rivals 4 out of 5
Equipment 5 out of 5
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