2021 KTM 390 Duke 21 0.4L Petrol · CY71 AAO

The 2021 KTM 390 Duke 21 has achieved a clean MOT pass history with both recent tests conducted on 29 November 2024 and 19 November 2025 recording no defects or advisories. This consistent performance over the past two years suggests a stable maintenance regimen, with no evidence of recurring mechanical issues or progressive wear patterns that might indicate underlying neglect or component failure. The vehicle’s roadworthiness appears to be reliably maintained, aligning with the manufacturer’s service intervals and regulatory standards, though the absence of recorded defects does not preclude the need for proactive inspections, particularly given its age and the potential for silent wear over time. The recorded mileage of 5,602 miles is notably low for a vehicle of this age, averaging approximately 1,120 miles per year. Such a usage rate is uncommon for a motorcycle of this class, especially when considering the 2021 model year, and may reflect periods of prolonged inactivity or infrequent use. While low mileage can mitigate certain wear concerns—such as those affecting brake pads, clutch components, or suspension bushings—it does not absolve the need for caution. Extended standing can exacerbate issues like corrosion on brake discs and calipers, particularly if the vehicle is exposed to damp or salty conditions, leading to binding or reduced braking efficiency. Additionally, fluids such as brake fluid and coolant degrade over time regardless of mileage, so calendar-based servicing should be considered. Given the clean MOT history and low recorded mileage, the prospective buyer should conduct a thorough physical inspection to address both age-related and usage-specific risks. First and foremost, examine the tyres for signs of sidewall cracking or perishing, which can compromise structural integrity and handling, especially on wet surfaces. Check the brake system for corrosion on the discs and calipers, particularly around the pivot points and wheel hubs, as prolonged standing can cause rust to form and bind the components, leading to reduced braking performance or even failure. Inspect the suspension for any signs of wear on the coil springs, shock absorbers, or suspension bushes, focusing on the rear for potential flexing or excessive play, which may indicate progressive damage from standing or minor impacts. The battery should be tested for health, as low usage can lead to diminished capacity or sulphation, particularly if the vehicle has been stored in a cold or damp environment. Verify the fluid levels in the engine, coolant, and brake systems, ensuring they are topped up and free from contamination, as fluids degrade over time even without significant mileage. Pay attention to the exhaust system for signs of corrosion or leaks, which could indicate underlying engine or catalytic converter issues, and check for any unusual noises or vibrations during a test drive, such as clunking from suspension components or a rough idle from engine or exhaust problems. Finally, verify that the service book is up to date, even if no recorded defects exist, as the manufacturer’s recommended intervals for oil changes, filter replacements, and other consumables should be adhered to, regardless of mileage. A comprehensive test drive should also include checking for smooth throttle response, even pedal feel, and no excessive play in the steering, as these can signal early wear or component failure that may not be apparent in a static inspection.