The design of the 2024 KTM 250 Duke takes cues from its larger sibling, the 390 Duke, with sharp, aggressive styling that reflects the bike's sporty nature. The new headlight unit, similar to the 390 Duke, and the exaggerated fuel tank extensions enhance its aggressive stance. Built on a new trellis frame with a die-cast aluminum sub-frame, the bike's structural rigidity is improved, ensuring better handling. Additionally, the rider and pillion seats are redesigned for better comfort, though more padding could enhance long-ride comfort​.

The 250 Duke now comes with a 5-inch LCD screen that includes Bluetooth connectivity. It provides clear, legible readouts, and the inclusion of ride-by-wire technology enhances throttle control. Another standout feature is the Supermoto ABS, allowing the rear ABS to be disengaged for more control during aggressive riding or sliding​.

The 2024 KTM 250 Duke is powered by a 249cc single-cylinder, liquid-cooled engine producing 30.57 bhp at 9,250 rpm and 25 Nm of torque at 7,250 rpm. This represents a slight increase in both power and torque compared to the previous model, enhancing its already impressive performance. The bike comes alive after 4,000 rpm, delivering smooth, progressive power and pulling strongly in higher gears.

However, there is a noticeable buzz between 4,500 to 5,500 rpm, particularly on the handlebars and footpegs. This may affect comfort on longer highway rides but is manageable in city conditions. Despite this, the bike remains engaging, offering precise throttle transitions and impressive power delivery even beyond 100 km/h​.

The KTM 250 Duke is known for its exceptional handling, and the 2024 model further improves on this with significant weight reductions. The overall kerb weight is reduced by 8 kg, with 1.1 kg unsprung mass also shaved off, making the bike even more agile. The WP Apex suspension—including 43 mm USD front forks with increased travel—provides a stiffer, sportier ride. While the suspension feels slightly stiff, especially over bumps, it excels in handling and cornering​.

The new offset monoshock improves ride quality and increases ground clearance to 176 mm, allowing for more confidence on uneven roads. The 320 mm front brake offers good bite, and the progression through the lever ensures controlled stopping power​.

The 2024 KTM 250 Duke improves rider comfort with a lowered seat height of 800 mm, making it more accessible for a wider range of riders. The revised rider and pillion seats are designed for better comfort, although the padding could be enhanced for long-distance touring. The new, wider 13.4-liter fuel tank improves ergonomics, offering a more comfortable ride over longer distances​.