Yamaha RD 125 (1973) vs Honda CX 650E (1984)
Comparison technical specifications
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| Make: | Yamaha | Honda |
| Model: | RD 125 | CX 650E |
| Years: | 1973 | 1984 |
| Engine: | Two stroke, parallel twin | Four stroke, longitudinal 800 V-twin cylinder, camshaft nestles at the base of the V between the cylinders. ,OHV, 4 valves per cylinder operated by pushrods |
| Capacity: | 124 cc / 7.6 cu-in | 673 cc / 41.07 cu-in |
| Bore x Stroke: | 43 х 43 mm | 82.5 x 63 mm |
| Cooling System: | Air cooled | Liquid cooled |
| Compression Ratio: | 6.8:1 | 9.8:1 |
| Induction: | 2x 18mm Teikei carburetors | 2x 39mm Keihin carburetors |
| Ignition: | Battery coil | CDI |
| Starting: | Kick | Electreic |
| Max Power: | 17 hp / 12.4 kW @ 8500 rpm | 64 hp / 47.7 kW @ 8000 rpm |
| Max Torque: | 1.3 kgf-m @ 8000 rpm | 61 Nm / 45 lb-ft @ 6500 rpm |
| Transmission: | 5 Speed | 5 Speed |
| Final Drive: | Chain | Shaft |
| Front Suspension: | 28 mm telescopic forks | Air assisted telescopic forks |
| Rear Suspension: | Dual rear shock pre-load adjustable | Pro-link, air adjustable preload |
| Front Brakes: | 150 mm Drum | 2x 280mm discs |
| Rear Brakes: | 130 mm Drum | Single 280mm disc |
| Front Tyre: | 2.75-18 | 100/90-18 |
| Rear Tyre: | 3.00-18 | 120/90-18 |
| Wet Weight: | 115 kg / 255 lbs | 235.0 kg / 518.1 lbs |
| Fuel Capacity: | 11.5 Litres / 3.04 US gal | 19 Litres / 5.0 US gal |
| Standing ¼ Mile: | 18.2 sec | 13.5 sec / 99 mph |
| Top Speed: | 81 mph | 186.6 km/h / 116 mph |