KTM Duke 390 review, first ride: Smaller engine, same streetfighter spirit?

What happens when one of India's wildest streetfighters trades cubic capacity for tax efficiency? As it turns out, losing 49cc does not necessarily mean losing the sharpness that defined the Duke.

For years, KTM’s formula for the Duke 390 was wonderfully uncomplicated. Add more performance, sharpen the chassis, amplify the attitude and let the motorcycle’s manic personality do the rest. The latest-generation Duke only pushed that philosophy further with its larger 398cc engine and harder-edged character, albeit with a friendlier nature, which is why this new version initially feels almost contradictory. The displacement has dropped to 349cc, specifically to fall under the 350cc tax bracket and benefit from lower GST. On paper, it sounds like the kind of compromise enthusiasts would immediately dismiss. A smaller engine in a motorcycle celebrated for performance feels counterintuitive.

Visually, very little changes between this motorcycle and the larger-capacity 390 Duke R. The 390 Duke (350) gets different graphics, colour options and blacked-out alloy wheels and frame. That’s it. The real differences lie underneath. While the 398cc engine in the Duke R feels eager from the moment you crack the throttle open, this 349cc motor delivers its performance in a calmer, more progressive manner.

Power and torque figures have naturally dropped, with the output now at 41.5bhp and 33.5Nm. The 398.63cc motor makes 46bhp@8,500rpm and 39Nm@6,500rpm. This has been achieved by opting for a shorter stroke of 56.15mm, down from 64mm. That being said, it still carries the trademark KTM sharpness, but there is less urgency in the way it builds speed and noticeably less intimidation in everyday riding conditions.

That difference is felt most clearly through the mid-range. The 398cc motor in the Duke R has a thick spread of torque that gives the motorcycle a strong, immediate shove every time you twist the throttle. This downsized engine cannot quite replicate that same muscular response. Overtakes require slightly more planning, and accelerating out of corners lacks the explosive punch of the larger motor. Riders familiar with the Duke R will immediately notice that softer delivery. However, viewed independently, the performance still feels brisk and entertaining. The engine remains energetic enough to encourage spirited riding, particularly once you start pushing deeper into the rev range. This new motor feels smoother with fewer vibrations in lower revs filtering through the bars, pegs and seat. Around town, the Duke now feels less frantic and easier to ride smoothly in traffic. Low-speed fuelling is cleaner, the throttle response feels more predictable. However, KTM has not entirely erased the excitement from the experience.

Push beyond 8,000rpm and the engine comes alive with a distinct surge of energy. The top-end punch feels sharp, urgent and unmistakably Duke-like, rewarding riders who enjoy holding onto gears and exploring the upper reaches of the rev counter. It is here that the motorcycle recaptures much of the aggression associated with the badge, albiet with some more vibes. The chassis, meanwhile, remains superb. Steering is quick without feeling nervous, direction changes happen effortlessly, and the motorcycle still encourages an aggressive riding style through corners. Combined with the slick six-speed gearbox and quickshifter, the overall package continues to feel engaging in a way few motorcycles in this segment can replicate.

VERDICT

If you step off the 398cc-powered Duke R and ride this motorcycle immediately afterwards, the missing punch will be obvious. But outside that direct comparison, the differences are far smaller than expected. Price-wise, there’s a Rs 62,000 difference, which is significant to say the least. The handling, ergonomics and top-end performance remain intact, while the toned-down engine improves day-to-day usability. This still feels every bit like a proper Duke, only one that is slightly calmer and lighter on the pocket.

Subscribe to Auto Today Magazine

SPECS

• Engine: 349.32cc, single-cylinder, liquid-cooled
• Max power: 41.5bhp@8,600rpm
• Peak torque: 33.5Nm@7,000rpm
• Gearbox: 6-speed
• Kerb weight: 168.3kg
• Seat height: 800-820mm
• Fuel capacity: 15 litres
• Price: 2.78 lakh (ex-showroom)

- Ends