Kawasaki 250 S1 Mach I Specs (Top Speed | Horsepower | Weight)

The Kawasaki 250 S1 Mach I motorcycle specifications include a 249 cc (15.19 cu in) engine, a 5-speed gearbox, and a listed weight of 150 kg (330.7 lb).

Key specifications

1972-1974Model years
249 ccDisplacement
150 kgWet weight
14 LFuel tank
Model years covered
197219731974
Year-specific specification changes

The 1972 model is treated as the standard specification. Only later model years with a different supplied value are shown below.

Front brakes
1973Expanding brake (drum brake)

How the Kawasaki 250 S1 Mach I compares

This compares the motorcycle with all Kawasaki models in this specifications database. The blue marker is this model and the grey line is the Kawasaki database average.

Displacement249 cc
Low 84 ccAverage 687 ccHigh 1,700 cc

About 64% lower than the Kawasaki database average. Around the 24th percentile across Kawasaki models.

Wet weight150 kg
Low 70.3 kgAverage 208 kgHigh 383.1 kg

About 28% lighter than the Kawasaki database average. Around the 23rd percentile across Kawasaki models.

Fuel capacity14 L
Low 3.8 LAverage 15.3 LHigh 24 L

About 8% smaller than the Kawasaki database average. Around the 37th percentile across Kawasaki models.

This model Kawasaki database average

Kawasaki database percentile rankings

Percentiles show where this motorcycle sits across the Kawasaki specifications database. They are descriptive database rankings, not performance ratings.

Displacement24th

249 cc — larger displacement than about 24% of Kawasaki models.

Wet weight23rd

150 kg — heavier than about 23% of Kawasaki models, or lighter than about 77%.

Fuel capacity37th

14 L — larger than about 37% of Kawasaki fuel tanks in this database.

Mechanical overview

Engine layout snapshot

In-line three, two-stroke • 249 cc • Air cooled
Chassis snapshot

5-speed • Chain (final drive) • 3.00-18 front / 3.25-18 rear

Additional useful specifications

Front tire size 3.00-18
Rear tire size 3.25-18
Bore/stroke ratio 0.86:1 (Undersquare)

Model information

Category Classic

Engine specifications

Engine type In-line three, two-stroke
Displacement 249 cc (15.19 cu in)
Bore × stroke 45.0 x 52.3 mm (1.8 x 2.1 inches)
Compression ratio 7.5:1
Cooling system Air
Fuel control Port control

Transmission and drivetrain

Gearbox 5-speed
Final drive Chain (final drive)

Brakes, wheels and tires

Front brakes Expanding brake
Rear brakes Expanding brake
Front tire 3.00-18
Rear tire 3.25-18

Dimensions and weight

Wet weight 150 kg (330.7 lb)

Fuel and emissions

Fuel capacity 14.00 L (3.70 US gal)

Performance

Top speed 150.0 km/h (93.2 mph)

Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from Kawasaki models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Kawasaki information before relying on them. Visit the official Kawasaki website.