Yamaha DS 7 Specs (Top Speed | Horsepower | Weight)

The Yamaha DS 7 motorcycle specifications include a 247 cc (15.07 cu in) engine, a 5-speed gearbox, and a listed weight of 146 kg (321.9 lb).

Key specifications

1971-1972Model years
247 ccDisplacement
146 kgWet weight
12 LFuel tank
Model years covered
19711972

Year-specific specification changes

No material specification changes from the 1971 baseline were found in the available data.

How the Yamaha DS 7 compares

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

Displacement247 cc
Low 49 ccAverage 550 ccHigh 1,852 cc

About 55% lower than the Yamaha database average. Around the 32nd percentile across Yamaha models.

Wet weight146 kg
Low 72.1 kgAverage 186.3 kgHigh 348.7 kg

About 22% lighter than the Yamaha database average. Around the 35th percentile across Yamaha models.

Fuel capacity12 L
Low 4 LAverage 13 LHigh 24 L

About 8% smaller than the Yamaha database average. Around the 45th percentile across Yamaha models.

This model Yamaha database average

Yamaha database percentile rankings

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

Displacement32nd

247 cc — larger displacement than about 32% of Yamaha models.

Wet weight35th

146 kg — heavier than about 35% of Yamaha models, or lighter than about 65%.

Fuel capacity45th

12 L — larger than about 45% of Yamaha fuel tanks in this database.

Mechanical overview

Engine layout snapshot

Twin, two-stroke • 247 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 1.00:1 (Square)

Model information

Category Classic

Engine specifications

Engine type Twin, two-stroke
Displacement 247 cc (15.07 cu in)
Bore × stroke 54.0 x 54 mm (2.1 x 2.1 inches)
Compression ratio 7.1:1
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 146 kg (321.9 lb)

Fuel and emissions

Fuel capacity 12.00 L (3.17 US gal)

Performance

Top speed 140.0 km/h (87.0 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 Yamaha models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Yamaha information before relying on them. Visit the official Yamaha website.