MZ 660 Mastiff - 2003 Specifications and Reviews

The 2003 MZ 660 Mastiff is a lightweight naked bike ideal for beginner and commuter riders seeking simplicity and economy. Its single-cylinder engine delivers modest but reliable performance with a low seat height and manageable weight, making it accessible for new riders. Known for affordability and dependable everyday practicality rather than performance thrills.

2003
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General information

CategoryNaked bike
Year2003
ModelMZ 660 Mastiff

Engine and Transmission Specifications

Torque57.00
Power50.00
Stroke4
Engine typeSingle cylinder
Capacity:660.00 ccm (40.27 cubic inches)
 
 

Physical measures and capacities

Wheelbase1,465 mm (57.7 inches)
Seat height830 mm (32.7 inches) If adjustable, lowest setting.
Dry weight175.0 kg (385.8 pounds)

MZ 660 Mastiff dimensions and frame

Power/weight ratio0.2857 HP/kg

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Reserve fuel capacity2.50 litres (0.66 gallons)
Fuel capacity13.50 litres (3.57 gallons)

Performance Profile & Rider Fit

50 hp
Peak Power
5.8s
0-60 mph

Best For

Track40%
City70%
Cornering72%
Daily Riding60%
Touring30%
Passenger25%

Rider Profile

Best ForBest suited to riders with at least some prior experience, as the big single's torquey, thumping power delivery and tall seat height reward confident handling.
PurposeA lightweight naked bike designed for punchy, characterful street riding and back-road fun rather than outright speed or distance covering.
Rider FitThe tall 830mm seat height and 175kg dry weight suit riders of average-to-tall stature who can comfortably manage a firm, upright single-cylinder machine.
CharacterRaw and mechanical in feel, this bike delivers gruff single-cylinder charm with strong low-down torque and agile, flickable handling.
Not Ideal ForNot a good match for riders seeking smooth long-distance touring comfort, pillion-friendly ergonomics, or high-speed motorway cruising.

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

Rider Fit Visualizer

2003 MZ 660 Mastiff Rider Ergonomics Assessment

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

Feet:

At 830mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with balls of both feet on the 2003 MZ 660 Mastiff, with a relaxed knee angle of around 130 degrees and a forward-leaning 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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