Ktm 690 Duke
The KTM 690 Duke was introduced in 2007 as a successor to the 640 Duke, featuring a brand-new single-cylinder LC4 engine and establishing itself as the world's most powerful production single-cylinder motorcycle at the time. It underwent a major redesign in 2012 with improved ergonomics and electronics, and again in 2016 with fuel injection refinements and a trellis frame update, cementing its reputation as the benchmark naked single-cylinder streetfighter. It is celebrated for its lightweight, flickable handling and punchy mid-range torque, making it a favorite among urban riders and those seeking an engaging, minimalist riding experience.
73 hp
Power
73 Nm
Torque
149 kg
Weight
175 km/h
Top Speed
4.5–5.5 L/100km (typical real-world average)
Fuel
Naked
Body
What Buyers Should Know
Single-Cylinder Powerhouse
The 690 Duke uses a 693cc LC4 single-cylinder engine producing ~73hp, making it one of the most powerful single-cylinder street bikes ever made. This unique engine delivers strong mid-range torque with a distinctive character unlike any parallel twin or inline-four.
Watch the Valve Clearances
The LC4 engine requires diligent valve clearance checks every 6,000 miles — skipping this is the most common cause of costly engine damage on high-mileage bikes. Always verify service history before buying used.
Holds Value Well
The 690 Duke retains resale value better than most middleweight nakeds due to its niche appeal and limited competition in the high-performance single-cylinder segment. A well-maintained example rarely sits unsold for long.
Full Specifications
Rivals & Alternatives
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