AI
Ktm
640 Duke
Naked · 625 cc
For sale now3 motorcycles
- Engine
- 625 cc
- Power
- 60 hp
- Weight
- 148 kg
- Price range
- €3,000 – €3,000
- Avg. mileage
- 13,957 km
- Common year
- 2004 · 1 motorcycles
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What should you pay for a 640 Duke?
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Price trend+12%
Based on price data from 6 of the past 12 months.
Used prices are trending up: the typical asking price is €325 higher than in May 2026.
Model family
640 Duke at a glance
Quick reference values. Model year, generation and trim can differ.
Displacement
625 cc
Power
60 hp · 44 kW
Torque
60 Nm
Category
Naked
Specifications
- Displacement
- 625 cc
- Power
- 60 hp · 44 kW
- Torque
- 60 Nm
- Weight
- 148 kg
- Seat height
- 880 mm
- Top speed
- 175 km/h
- Production
- 1999 – 2006
- Category
- Naked
Comparable models
Also worth considering
Models in the same category and price range to consider alongside the 640 Duke.
Generations and editions
Features and handling differ by generation. Use this overview to find the right version.
1 variants
Years
1999 - 2006
640 Duke
GenerationThis technical reference row for the 640 Duke combines the available catalogue data: 625 cc, 44 kW, 60 hp, 148 kg. It describes the model reference, but does not necessarily distinguish every production or equipment change. Always verify model year, trim and technical values against the individual motorcycle.
625 cc60 hp
About this model
About the Ktm 640 Duke
The KTM 640 Duke is an air-cooled LC4 single-cylinder of 625 cc produced by KTM from 1999 to 2006. Known as the Duke II, it is a streetfighter with stark, aggressive lines and a tall riding position. Producing 44 kW (60 hp) at just 148 kg, it is exceptionally agile and fast in urban conditions. The SOHC engine with liquid-cooled cylinder head (later models) and a balance shaft to reduce vibration represented a technical advancement over the 600 LC4.
The 640 Duke targets experienced riders seeking a lively, lightweight streetbike with a pronounced character. Its low weight and strong torque make it outstanding for spirited city riding and twisty mountain roads; it is not a touring motorcycle. Beginners should be cautious: the tall seat height and direct engine response demand experience. Direct competitors include the Aprilia Moto 6.5 and Husqvarna SM 610.
- Category
- Naked
- Production
- 1999 – 2006
- Power
- 60 hp
- Weight
- 148 kg
Before you buy
What to check before buying
- Check cylinder head temperature: the air-cooled LC4 can overheat during intensive urban use.
- Inspect balance shaft bearings for wear; noticeable vibration above 5,000 rpm indicates worn bearings.
- Check valve clearances; adjustment is required every 6,000 km and is frequently deferred.
- Ask about carburettor needle and diaphragm condition; ageing leads to lean carburation at part throttle.
- Inspect the frame for cracks at the subframe junction, especially on examples used intensively on road.
Frequently asked questions
Frequently asked questions about the Ktm 640 Duke
What does a used Ktm 640 Duke cost?
A used Ktm 640 Duke costs €3,000 on average. Most cost €3,000 to €3,000. This is based on 3 motorcycles for sale now.
How many used Ktm 640 Duke are for sale?
MotorMonitor now compares 3 used Ktm 640 Duke motorcycles from Dutch sales sites.
What year and mileage does an average used Ktm 640 Duke have?
The average used Ktm 640 Duke is from 2004 and has done about 13,957 km.