VOR MX 503 Motocross - 2001 Specifications and Reviews

The 2001 VOR MX 503 is a lightweight 503cc single-cylinder motocross machine designed for amateur and intermediate riders seeking accessible off-road performance. Known for its manageable 56 horsepower and compact 109 kg frame, it delivers reliable power delivery suited to trail and competitive riding. The bike's low seat height and straightforward 5-speed transmission make it an excellent stepping stone for developing motocross skills.

2001
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General information

CategoryCross / motocross
Year2001
ModelVOR MX 503 Motocross
 
 

Engine and Transmission Specifications

Transmission typefinal driveChain
Gearbox5-speed
Valves per cylinder4
Fuel systemCarburettor
Bore x stroke95.0 x 71.0 mm (3.7 x 2.8 inches)
Power56.00
Stroke4
Engine typeSingle cylinder
Capacity:503.00 ccm (30.69 cubic inches)

Physical measures and capacities

Wheelbase1,485 mm (58.5 inches)
Seat height940 mm (37.0 inches) If adjustable, lowest setting.
Dry weight109.0 kg (240.3 pounds)
 
 

VOR MX 503 Motocross dimensions and frame

Rear brakes diameter220 mm (8.7 inches)
Rear brakesSingle disc
Front brakes diameter270 mm (10.6 inches)
Front brakesSingle disc
Rear tyre dimensions130/90-19
Front tyre dimensions90/90-21
Rear suspension travel315 mm (12.4 inches)
Front suspension travel305 mm (12.0 inches)

Speed and acceleration

Power/weight ratio0.5138 HP/kg

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity9.00 litres (2.38 gallons)

Performance Profile & Rider Fit

56 hp
Peak Power

Best For

Track85%
City10%
Cornering80%
Daily Riding10%
Touring12%
Passenger5%

Rider Profile

Best ForThis is a pure competition motocross machine best suited to experienced off-road riders comfortable with a high-strung, aggressive big-bore single.
PurposeBuilt exclusively for motocross racing and track-style off-road riding, not for street use or commuting.
Rider FitThe tall 940mm seat height, minimal weight, and lack of a flywheel-smoothed powerband demand strong rider fitness, confident standing control, and good bike-throwing strength.
CharacterA raw, lightweight four-stroke single with a punchy power-to-weight ratio, long-travel suspension, and razor-sharp agility designed to reward aggressive, committed riding.
Not Ideal ForThis bike is not suitable for beginners, road riding, touring, or anyone seeking comfort, weather protection, or passenger capability.

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

Rider Fit Visualizer

2001 VOR MX 503 Motocross Rider Ergonomics Assessment

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Feet:

At 940mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2001 VOR MX 503 Motocross, 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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