The Yamaha RX 100 motorcycle specifications include a 100 cc (6.10 cu in) engine, a 4-speed gearbox, and a listed weight of 99 kg (218.3 lb).
Key specifications
How the Yamaha RX 100 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 82% lower than the Yamaha database average. Around the 11th percentile across Yamaha models.
About 5% lower than the Yamaha database average. Around the 26th percentile across Yamaha models.
About 19% smaller than the Yamaha database average. Around the 36th 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.
100 cc — larger displacement than about 11% of Yamaha models.
750 mm — taller than about 26% of Yamaha models.
10.5 L — larger than about 36% 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.
2,040
2,082
Close to average.
740
823
10% below average.
750
793
5% below average.
Mechanical overview
Additional useful specifications
| Front tire size | 2.50-R18 |
|---|---|
| Rear tire size | 3.00-R18 |
| Estimated theoretical fuel range | 420 km |
| Bore/stroke ratio | 1.00:1 (Square) |
Model information
| Year released | 1990 |
|---|---|
| Category | Allround |
Engine specifications
| Engine type | Single cylinder, two-stroke |
|---|---|
| Displacement | 100 cc (6.10 cu in) |
| Torque | 8.6 Nm (0.9 kgf-m or 6.3 ft.lbs) @ 6,500 rpm |
| Bore × stroke | 50.0 x 50 mm (2.0 x 2.0 inches) |
| Compression ratio | 10.1:1 |
| Valves per cylinder | 2 |
| Cooling system | Air |
| Fuel system | Carburettor. Mikuni RM 18 mm |
| Fuel control | Single Overhead Cams (SOHC) |
| Ignition | CDI |
| Starter | Kick |
| Lubrication | Autolube |
Transmission and drivetrain
| Gearbox | 4-speed |
|---|---|
| Final drive | Chain (final drive) |
| Clutch | 74 tooth clutch housing bell |
Chassis and suspension
| Frame | Double cradle frame |
|---|---|
| Front suspension | Telescopic oil damped |
| Rear suspension | Coil spring oil damped |
Brakes, wheels and tires
| Front brakes | Expanding brake (drum brake) |
|---|---|
| Rear brakes | Expanding brake (drum brake) |
| Front tire | 2.50-R18 |
| Rear tire | 3.00-R18 |
Dimensions and weight
| Dry weight | 99 kg (218.3 lb) |
|---|---|
| Seat height | 750 mm (29.5 inches) |
| Overall length | 2,040 mm (80.3 inches) |
| Overall width | 740 mm (29.1 inches) |
Fuel and emissions
| Fuel capacity | 10.50 L (2.77 US gal) |
|---|---|
| Fuel consumption | 2.50 L/100 km (40.0 km/l or 94.09 mpg) |
| Greenhouse gases | 58.0 CO 2 g/km. (CO2 – Carbon dioxide emission) |
Performance
| Top speed | 125.0 km/h (77.7 mph) |
|---|---|
| 0–100 km/h | 19.50 seconds |
| Power/weight ratio | 0.1162 hp/kg |
Other specifications
| Color options | Red, black, blue, silver |
|---|---|
| Exhaust system | Single stainless steel pipe |
| Comments | It is a living legend in India even in 4s era.Rules the road for speed stability being a 100cc only. |
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.