The Suzuki RM 400 C motorcycle specifications include a 402 cc (24.53 cu in) engine, power of 43 hp (31.4 kW) @ 6,500 rpm, a 5-speed gearbox, and a listed weight of 105 kg (231.5 lb).
Key specifications
How the Suzuki RM 400 C compares
This compares the motorcycle with all Suzuki models in this specifications database. The blue marker is this model and the grey line is the Suzuki database average.
About 34% lower than the Suzuki database average. Around the 39th percentile across Suzuki models.
About 34% lower than the Suzuki database average. Around the 40th percentile across Suzuki models.
About 40% smaller than the Suzuki database average. Around the 17th percentile across Suzuki models.
Suzuki database percentile rankings
Percentiles show where this motorcycle sits across the Suzuki specifications database. They are descriptive database rankings, not performance ratings.
43 hp — more powerful than about 39% of Suzuki models with power data.
402 cc — larger displacement than about 40% of Suzuki models.
8.5 L — larger than about 17% of Suzuki fuel tanks in this database.
Dimensions compared with Suzuki average
Each measurement is compared with the average value across Suzuki models where that dimension is available.
2,140
2,137
Close to average.
885
823
8% above average.
1,225
1,158
6% above average.
1,450
1,444
Close to average.
290
176
65% above average.
Mechanical overview
Additional useful specifications
| Power-to-weight ratio | 0.410 hp/kg |
|---|---|
| Power-to-weight | 409.5 hp/tonne |
| Specific power | 107.0 hp/L |
| Bore/stroke ratio | 1.00:1 (Square) |
Model information
| Year released | 1978 |
|---|---|
| Category | Cross / motocross |
Engine specifications
| Engine type | Single cylinder, two-stroke |
|---|---|
| Displacement | 402 cc (24.53 cu in) |
| Power | 43 hp (31.4 kW) @ 6,500 rpm |
| Torque | 4.8 Nm (0.5 kgf-m or 3.6 ft.lbs) @ 6,000 rpm |
| Bore × stroke | 80.0 x 80 mm (3.1 x 3.1 inches) |
| Compression ratio | 6.7:1 |
| Cooling system | Air |
| Fuel system | Carburettor. Mikuni VM36SS |
| Ignition | Suzuki PEI |
| Starter | Kick |
Transmission and drivetrain
| Gearbox | 5-speed |
|---|---|
| Final drive | Chain (final drive) |
| Clutch | Wet Multiplate Type |
Chassis and suspension
| Frame | High Tension Steel Pipe Single Downtube Semi Double Cradle |
|---|---|
| Front suspension | Telescopic coil spring air oil infinately adjustable damping |
| Rear suspension | Suzuki Tru-Trac Twin shocks gas/oil damping aluminium swinging arm |
| Front wheel travel | 249 mm (9.8 inches) |
| Rear wheel travel | 244 mm (9.6 inches) |
Brakes, wheels and tires
| Front brakes | Expanding brake (drum brake) |
|---|---|
| Rear brakes | Expanding brake (drum brake). full floating rear brake design |
Dimensions and weight
| Dry weight | 105 kg (231.5 lb) |
|---|---|
| Overall length | 2,140 mm (84.3 inches) |
| Overall width | 885 mm (34.8 inches) |
| Overall height | 1,225 mm (48.2 inches) |
| Wheelbase | 1,450 mm (57.1 inches) |
| Ground clearance | 290 mm (11.4 inches) |
Fuel and emissions
| Fuel capacity | 8.50 L (2.25 US gal) |
|---|
Performance
| Top speed | 148.0 km/h (92.0 mph) |
|---|---|
| Power/weight ratio | 0.4095 hp/kg |
Other specifications
| Color options | Yellow |
|---|---|
| Exhaust system | Expansion Chamber with silencer |
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 Suzuki models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Suzuki information before relying on them. Visit the official Suzuki website.