KTM 660 LC4 Rally Factory Replica - 2003 Specifications and Reviews

The 2003 KTM 660 LC4 Rally Factory Replica is a lightweight enduro bike designed for adventure riders seeking genuine off-road capability. Its 654cc liquid-cooled single-cylinder engine delivers 65 horsepower with strong low-end torque, excelling on challenging terrain and long-distance rally exploration. Best known for reliability and simplicity, it appeals to experienced off-road enthusiasts and rally competitors.

2003
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General information

CategoryEnduro / offroad
Year2003
ModelKTM 660 LC4 Rally Factory Replica

Engine and Transmission Specifications

Transmission typefinal driveChain
Gearbox5-speed
Cooling systemLiquid
Valves per cylinder4
Fuel systemCarburettor
Bore x stroke102.0 x 80.0 mm (4.0 x 3.1 inches)
Compression11.5:1
Torque69.50
Power65.00
Stroke4
Engine typeSingle cylinder
Capacity:654.00 ccm (39.91 cubic inches)
 
 

Physical measures and capacities

Wheelbase1,510 mm (59.4 inches)
Ground clearance320 mm (12.6 inches)
Seat height980 mm (38.6 inches) If adjustable, lowest setting.
Dry weight162.0 kg (357.1 pounds)

KTM 660 LC4 Rally Factory Replica dimensions and frame

Rear brakes diameter220 mm (8.7 inches)
Rear brakesSingle disc
Front brakes diameter300 mm (11.8 inches)
Front brakesSingle disc
Rear tyre dimensions140/90-18
Front tyre dimensions90/90-21
Rear suspension travel320 mm (12.6 inches)
Rear suspensionWP - Monoshock
Front suspension travel295 mm (11.6 inches)
Front suspensionWP-USD 48 Multi Adjuster

Speed and acceleration

Power/weight ratio0.4012 HP/kg
 
 

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity48.00 litres (12.68 gallons)

Performance Profile & Rider Fit

65 hp
Peak Power
4.8s
0-60 mph

Best For

Track30%
City40%
Cornering65%
Daily Riding45%
Touring65%
Passenger25%

Rider Profile

Best ForThis is a tall, powerful single-cylinder machine best suited to experienced off-road riders comfortable with a rally-bred, top-heavy feel at low speed.
PurposeBuilt as a factory rally replica, it's designed for long-distance desert-style off-road adventure riding rather than commuting or track work.
Rider FitThe 980mm seat height and 162kg dry weight demand a taller rider with good physical strength and confidence balancing the bike standing on rough terrain.
CharacterIt has a raw, torquey big-single character with hard-hitting power delivery and rally DNA that rewards an aggressive, engaged riding style.
Not Ideal ForThis is not the right bike for shorter riders, nervous beginners, or anyone wanting a plush, low-effort commuting or two-up touring experience.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2003 KTM 660 LC4 Rally Factory Replica Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 980mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2003 KTM 660 LC4 Rally Factory Replica, with a cramped knee angle of around 85 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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