Ktm 990 Duke
Note: A KTM 990 Duke was never officially produced. KTM made the 990 Super Duke (2005–2013), a high-performance naked bike powered by a 999cc LC8 V-twin engine that became iconic for its aggressive styling and performance. The Duke lineup in larger displacements jumped from the 690 Duke to the 1290 Super Duke R (2014), skipping a '990 Duke' designation entirely. The following specs are for the KTM 990 Super Duke, which is likely what was intended.
~115 hp
Power
~100 Nm
Torque
~189 kg
Weight
~240 km/h (estimated for 990 Super Duke)
Top Speed
Estimated 7.5–9.0 L/100km (real-world average, based on 990 Super Duke data)
Fuel
Naked
Body
What Buyers Should Know
LC8 Engine Quirks
The 999cc parallel-twin LC8 engine is known for strong performance but watch for cam chain tensioner wear and oil consumption issues, especially on higher-mileage examples. Regular oil changes with quality synthetic are critical.
Solid Resale Value
The 990 Duke holds its value reasonably well as a limited-run naked bike, making it a smart buy if purchased at the right price. Low production numbers keep demand steady among KTM enthusiasts.
WP Suspension Issues
The WP forks and rear shock are excellent performers but known to leak seals prematurely, particularly on pre-owned bikes. Budget for a suspension service if buying used, as rebuilds can be costly.
Full Specifications
Rivals & Alternatives
Bikes that buyers cross-shop with the Ktm 990 Duke
