Supermotos

2004KTM 660 SMC

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The 2004 KTM 660 SMC is a lightweight supermotard designed for agile riders seeking playful urban performance and off-road capability. Its single-cylinder 654cc engine delivers accessible power with excellent torque characteristics, making it ideal for both street riding and adventure touring. Best known for its nimble handling and versatile nature, it appeals to riders valuing fun and practicality over raw horsepower.

Capacity: 654.0 ccm
Engine: Single, four-stroke
Gearbox: 5-speed
Dry weight: 131.0 kg
Seat height: 910 mm
Power: 32.2 HP (23.7 kW)

⇄ Compare with another bike All model years

What’s new for the 2004 KTM 660 SMC

vs the 2003

Spec	2003	2004
Power	32.9 HP (24.2 kW)	32.2 HP (23.7 kW)
Torque	43.0 Nm (4.4 kgf-m or 31.7 ft.lbs) @ 4000 RPM	43.0 Nm (4.4 kgf-m or 31.7 ft.lbs)

Other years 2003 2004 2005 2006 2007

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail30%

Cornering92%

City riding80%

Daily riding45%

Touring25%

Two-up20%

Track75%

Best for: Built for supermoto-style thrills, tight cornering, and flickable street or track riding rather than long-distance travel.
Built for: A raw, single-cylinder supermoto that rewards an energetic, playful riding style with immediate throttle response and razor-sharp steering.
Not ideal for: Not a good match for riders wanting plush comfort, pillion-friendly ergonomics, or a relaxed high-mileage touring machine.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 910mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2004 KTM 660 SMC, with a relaxed knee angle of around 150 degrees and a forward-leaning riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at over 900 mm — Sky High →

Find bikes that fit your height →

Full specifications

Engine

Capacity: 654.0 ccm
Power: 32.2 HP (23.7 kW)
Torque: 43.0 Nm (4.4 kgf-m)
Engine type: Single, four-stroke
Power/weight ratio: 0.2458 HP/kg
Bore x stroke: 102.0 x 80.0 mm
Compression: 11.7:1
Cooling system: Liquid
Fuel system: Carburettor
Starting: Electric & kick
Ignition: Kokusan DC-CDI
Valves per cylinder: 4
Lubrication system: Pressure lubrication with 2 oil pumps

Transmission

Gearbox: 5-speed
Transmission type: Manual
Final drive: Chain
Clutch: Multi-disc wet clutch, hydraulically operated

Dimensions & weight

Wheelbase: 1510 mm
Overall width: 660 mm
Seat height: 910 mm
Dry weight: 131.0 kg
Fuel capacity: 9.00 litres
Ground clearance: 290 mm

Chassis & suspension

Frame: Chromium-molybdenum, power-coated
Front suspension: WP-USD 48 MA
Rear suspension: WP - Monoshock
Front wheel travel: 265 mm
Rear wheel travel: 310 mm
Rake (fork angle): 27.0°
Trail: 63 mm

Brakes & wheels

Front brakes: Single disc
Front brakes diameter: 320 mm
Rear brakes: Single disc
Rear brakes diameter: 220 mm
Front tyre: 120/70-17
Rear tyre: 160/60-17

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted

Specification	2003	2004	2005	2006	2007
Capacity	654.00 ccm (39.91 cubic inches)	654.00 ccm (39.91 cubic inches)	654.00 ccm (39.91 cubic inches)	654.00 ccm (39.91 cubic inches)	654.00 ccm (39.91 cubic inches)
Dry weight	131.0 kg (288.8 pounds)	131.0 kg (288.8 pounds)	131.0 kg (288.8 pounds)	138.0 kg (304.2 pounds)	138.0 kg (304.2 pounds)
Seat height	910 mm (35.8 inches)	910 mm (35.8 inches)	910 mm (35.8 inches)	910 mm (35.8 inches)	910 mm (35.8 inches)
Fuel capacity	9.00 litres (2.38 gallons)	9.00 litres (2.38 gallons)	9.00 litres (2.38 gallons)	9.20 litres (2.43 gallons)	9.20 litres (2.43 gallons)