Yamaha RD 350N (1983) vs Yamaha XJ 650 Maxim (1982) vs Yamaha XJ 550 (1981)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha |
| Model: | RD 350N | XJ 650 Maxim | XJ 550 |
| Years: | 1983 | 1982 | 1981 |
| Engine: | Two stroke, parallel twin cylinder | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder, | Four stroke, transverse four cylinder. DOHC, 2 valves per cylinder. |
| Capacity: | 347 cc / 21.1 cu-in | 653 cc / 39.8 cu-in | 528 cc / 32.2 cu-in |
| Bore x Stroke: | 64 х 54 mm | 63 х 52.4 mm | 57 X 51.8 mm |
| Cooling System: | Liquid cooled | Air-cooled | Air cooled |
| Compression Ratio: | 6.2 :1 | 9.2:1 | 9.5:1 |
| Induction: | 2x 26mm Mikuni slide-needle carburetor | 4x 32mm Hitachi carburetors | 4x 28mm Mikuni carburetors |
| Ignition: | Flywheel magneto CDI | Transistorized | Battery powered inductive |
| Starting: | Kick | Electric | Electric |
| Max Power: | 59 hp / 43.9 kW @ 9000 rpm | 71 hp / 51.8 kW @ 9400 rpm | 37 kW / 50 PS @ 9000 rpm |
| Max Torque: | 40.2 Nm / 4.1 kgf-m / @ 8000 rpm | 57 Nm / 42 lb-ft @ 7500 rpm | 41.9 Nm / 4,3 m-kg @ 7500 rpm |
| Transmission: | 6 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain | Shaft | Chain |
| Front Suspension: | 32mm stanchion tube forks | 26mm Air assisted telescopic forks | Telescopic coil spring forks |
| Rear Suspension: | Single shock cantilever 5-way adjustable spring preload | Duel Kayaba shocks, 5-way adjustable spring preload | Swinging arm with dual dampers adjustable for preload |
| Front Brakes: | 2x 267mm disc 1 piston caliper | Single 300mm disc | 2x 267mm discs |
| Rear Brakes: | Drum | Drum | 182mm Drum |
| Front Tyre: | 3.00-18 | 3.25 H19 | 3.25-19 |
| Rear Tyre: | 3.50-18 | 130/90 H16 | 110/ 90-16 |
| Fuel Capacity: | 16.5 Liters / 4.3 US gal | 13 Litres / 3.4 US gal | 15 liters / 3.9 US gal |