Yamaha LB 3 bop 80 Specs (Top Speed | Horsepower | Weight)

The Yamaha LB 3 bop 80 motorcycle specifications include a 73 cc (4.45 cu in) engine, a 3-speed gearbox, and a listed weight of 82 kg (180.8 lb).

Key specifications

1978-1979Model years
73 ccDisplacement
82 kgWet weight
3.5 LFuel tank
Model years covered
19781979

Year-specific specification changes

No material specification changes from the 1978 baseline were found in the available data.

How the Yamaha LB 3 bop 80 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.

Displacement73 cc
Low 49 ccAverage 550 ccHigh 1,852 cc

About 87% lower than the Yamaha database average. Around the 9th percentile across Yamaha models.

Wet weight82 kg
Low 72.1 kgAverage 186.3 kgHigh 348.7 kg

About 56% lighter than the Yamaha database average. Around the 5th percentile across Yamaha models.

Fuel capacity3.5 L
Low 4 LAverage 13 LHigh 24 L

About 73% smaller than the Yamaha database average. Around the 1st 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.

Displacement9th

73 cc — larger displacement than about 9% of Yamaha models.

Wet weight5th

82 kg — heavier than about 5% of Yamaha models, or lighter than about 95%.

Fuel capacity1st

3.5 L — larger than about 1% of Yamaha fuel tanks in this database.

Mechanical overview

Engine layout snapshot

Single cylinder, two-stroke • 73 cc • Air cooled
Chassis snapshot

3-speed • Chain (final drive) • 4.00-10 front / 4.00-10 rear

Additional useful specifications

Front tire size 4.00-10
Rear tire size 4.00-10
Bore/stroke ratio 1.12:1 (Oversquare)

Model information

Category Scooter

Engine specifications

Engine type Single cylinder, two-stroke
Displacement 73 cc (4.45 cu in)
Bore × stroke 47.0 x 42 mm (1.9 x 1.7 inches)
Compression ratio 5.8:1
Cooling system Air
Fuel control Membrane

Transmission and drivetrain

Gearbox 3-speed
Final drive Chain (final drive)

Brakes, wheels and tires

Front brakes Expanding brake
Rear brakes Expanding brake
Front tire 4.00-10
Rear tire 4.00-10

Dimensions and weight

Wet weight 82 kg (180.8 lb)

Fuel and emissions

Fuel capacity 3.50 L (0.92 US gal)

Performance

Top speed 65.0 km/h (40.4 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.