The KTM 390 Duke has long been considered a top contender in the lightweight naked bike segment, known for its sharp styling, playful handling, and serious performance-to-price ratio. For 2025, KTM has taken things up a notch with a significant overhaul that goes far beyond cosmetic tweaks. With a new engine, advanced electronics, and premium features that punch well above its weight class, the question on every rider’s mind is: Is the 2025 KTM 390 Duke the best lightweight naked bike on the market today?
A Bigger, Better Engine
At the core of this year’s update is a brand-new 399cc engine, replacing the outgoing 373cc single-cylinder unit. The bump in displacement gives the 2025 Duke a noticeable increase in power, delivering around 44 horsepower. This might not seem like much at first glance, but considering the bike weighs just under 170 kg (curb weight), it results in an exceptional power-to-weight ratio. Whether you’re darting through city traffic or carving up twisty backroads, the 390 Duke feels lively, responsive, and always ready to have fun.
Refreshed Styling and Frame
The 2025 version also brings a much-needed visual refresh. KTM has sharpened the already-aggressive streetfighter styling with more angular tank shrouds, a sleeker tail section, and a redesigned LED headlight with a striking new DRL setup. The revised steel trellis frame and aluminum subframe improve overall balance and stability while keeping the bike light and agile. It’s a small bike that looks and feels like a serious machine.
Adjustable Suspension in a Lightweight Package
One of the standout upgrades for 2025 is the addition of adjustable suspension—something that’s almost unheard of in this segment. The WP Apex front forks and rear monoshock are both adjustable for compression and rebound, allowing riders to tailor the ride to their preferences or the road conditions. This alone sets the 390 Duke apart from most of its competitors in the lightweight category.
How It Performs on the Road
Performance-wise, the Duke is an absolute blast. It can hit a top speed of around 170 km/h (106 mph), and the revised gearing and engine tuning provide smooth power delivery across the rev range. Thanks to its lightweight chassis and sharp steering geometry, the bike feels planted yet flickable—perfect for both daily commutes and weekend rides. KTM has also introduced ride modes for 2025, including Street, Rain, and Supermoto. The latter disables rear ABS for those who like to get a bit rowdy on twisty roads or at the track.
Premium Tech Features for the Price
Tech lovers will appreciate just how feature-rich this little bike is. The new full-color TFT display is bright, responsive, and now includes smartphone connectivity via the KTMconnect app. Riders can access turn-by-turn navigation, music controls, and call notifications directly from the dash. Other premium features include cornering ABS, traction control, a bi-directional quickshifter (up and down), and even launch control—again, incredibly rare at this price point.
Pros and ❌ Cons
While the 390 Duke shines in many areas, it’s worth noting a few trade-offs. The 390 Duke’s aggressive ergonomics and firm seat might not be ideal for longer rides, especially for taller riders over six feet. Wind protection is also minimal, as expected from a naked bike, which might make highway cruising a bit tiring. Still, for what it’s designed to do—city riding, twisties, and light touring—it excels.
Who Is the 390 Duke 2025 For?
So who is this bike really for? The 2025 KTM 390 Duke is ideal for new riders looking for something that’s approachable yet exciting, commuters wanting a stylish and tech-packed machine, and even seasoned riders who want a lightweight second bike that doesn’t compromise on thrills. It’s versatile, practical, and above all, incredibly fun.
Price and Availability
Pricing for the 2025 model is expected to start around $6,500 USD, though this may vary slightly by region. The good news? It’s already beginning to arrive in dealerships across the U.S., Europe, and Asia, so riders won’t have to wait long to get their hands on one.
Final Verdict: A Lightweight Champion
To sum it all up: KTM has taken a great bike and made it even better. With its class-leading features, enhanced performance, and standout design, the 2025 KTM 390 Duke makes a compelling case as the best lightweight naked bike you can buy today. Whether you’re stepping up from a smaller machine or downsizing from a heavier one, this Duke is ready to impress.