The Yamaha RD 80 LC motorcycle specifications include a 79 cc (4.82 cu in) engine, a 6-speed gearbox, and a listed weight of 78 kg (172 lb).
Key specifications
How the Yamaha RD 80 LC 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.
About 86% lower than the Yamaha database average. Around the 9th percentile across Yamaha models.
Very close to the Yamaha database average. Around the 30th percentile across Yamaha models.
About 23% smaller than the Yamaha database average. Around the 35th percentile across Yamaha models.
Yamaha database percentile rankings
Percentiles show where this motorcycle sits across the Yamaha specifications database. They are descriptive database rankings, not performance ratings.
79 cc — larger displacement than about 9% of Yamaha models.
765 mm — taller than about 30% of Yamaha models.
10 L — larger than about 35% of Yamaha fuel tanks in this database.
Dimensions compared with Yamaha average
Each measurement is compared with the average value across Yamaha models where that dimension is available.
2,035
2,082
Close to average.
685
823
17% below average.
790
1,172
33% below average.
1,230
1,416
13% below average.
765
793
4% below average.
195
181
8% above average.
Mechanical overview
Additional useful specifications
| Front tire size | 2.50 -18 |
|---|---|
| Rear tire size | 2.76 -18 |
| Bore/stroke ratio | 1.17:1 (Oversquare) |
Model information
| Year released | 1982 |
|---|---|
| Category | Sport |
Engine specifications
| Engine type | Single cylinder, two-stroke |
|---|---|
| Displacement | 79 cc (4.82 cu in) |
| Torque | 9.4 Nm (1.0 kgf-m or 6.9 ft.lbs) @ 6,000 rpm |
| Bore × stroke | 49.0 x 42 mm (1.9 x 1.7 inches) |
| Compression ratio | 7.1:1 |
| Cooling system | Oil & air |
| Fuel system | Carburettor. Mikuni VM18 |
| Ignition | CDI |
| Starter | Kick |
| Lubrication | Wet sump |
Transmission and drivetrain
| Gearbox | 6-speed |
|---|---|
| Final drive | Chain (final drive) |
| Clutch | Wet plate |
Chassis and suspension
| Frame | Steel cradle |
|---|---|
| Front suspension | Telescopic forks |
| Rear suspension | Yamaha monoshock |
Brakes, wheels and tires
| Front brakes | Single disc. Single sliding piston caliper |
|---|---|
| Rear brakes | Expanding brake (drum brake) |
| Front tire | 2.50 -18 |
| Rear tire | 2.76 -18 |
Dimensions and weight
| Dry weight | 78 kg (172 lb) |
|---|---|
| Seat height | 765 mm (30.1 inches) |
| Overall length | 2,035 mm (80.1 inches) |
| Overall width | 685 mm (27.0 inches) |
| Overall height | 790 mm (31.1 inches) |
| Wheelbase | 1,230 mm (48.4 inches) |
| Ground clearance | 195 mm (7.7 inches) |
Fuel and emissions
| Fuel capacity | 10.00 L (2.64 US gal) |
|---|---|
| Reserve fuel capacity | 1.10 L (0.29 US gal) |
Performance
| Top speed | 128.7 km/h (80.0 mph) |
|---|---|
| Power/weight ratio | 0.1282 hp/kg |
Other specifications
| Color options | White or blue |
|---|---|
| Exhaust system | Single expansion chamber |
| Comments | This is the UK model. Only in production for 4 years 1979/82. |
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.