Honda CBX 650 Custom (1982-) vs Ducati 851 SP3 (1991) vs Honda CBX 250RS (1982-)
Comparison technical specifications
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| Make: | Honda | Ducati | Honda |
| Model: | CBX 650 Custom | 851 SP3 | CBX 250RS |
| Years: | 1982- | 1991 | 1982- |
| Engine: | Four stroke, transverse four cylinders, DOHC, 4 valve per cylinder. | Four stroke, 90°“L”twin cylinder, DOHC, desmodromic 4 valves per cylinder, belt driven | Four stroke, single cylinder,, DOHC, 4 valve |
| Capacity: | 656 cc / 40. cu-in | 888 cc / 54.2 cu in | 249 cc / 15.2 cu-in |
| Bore x Stroke: | 60 x 58 mm | 92 x 64 mm | 72 x 61 mm |
| Cooling System: | Air cooled | Liquid cooled | Air cooled |
| Compression Ratio: | 9.5:1 | 11.1:1 | 10.5:1 |
| Induction: | 4x 26mm Keihin | Weber I.A.W. CPU P7 electronic fuel injection. 2 x 50mm throttle bodies | PHO2R Slide valve carburetor |
| Ignition: | CDI | Inductive magnetically triggered | CDI |
| Starting: | Electric | Electric | Electric |
| Max Power: | 75 hp / 54.7 kW @ 9500 rpm | 86.8 kW / 118 hp @ 10500 rpm (at rear wheel: 81.6 kW / 111 hp @ 10500 rpm | 31 hp / 23.1 KW @ 9500 rpm |
| Max Torque: | 80.4 Nm / 8.2 kgf-m / 59.3 ft-lb @ 8250 rpm | 20 Nm / 14.7 lb-ft @ 9000 rpm | |
| Transmission: | 6 Speed | 6 Speed | 6 Speed |
| Final Drive: | Shaft | Chain | Chain |
| Front Suspension: | Showa air-spring, 39mm stanchion tube diameter, brake-actuated hydraulic anti-dive | 42 mm Öhlins FG 9050 upside-down fork with rebound compression damping adjustable | Telescopic forks |
| Rear Suspension: | Dual shocks, 5-way adjustable spring preload, 4-way adjustable rebound damping | Öhlins DU 8070 single shock with preload and damping adjust | Swinging arm dual shock |
| Front Brakes: | 2x 276 mm discs | 2 x 320 mm Disc, 4 piston calipers | Single 240mm disc 2 piston caliper |
| Rear Brakes: | Drum | Single 245 mm disc, 2 piston caliper | 180mm drum |
| Front Tyre: | 100/90-19 | 120/70 x 17 | 90/90 -18 |
| Rear Tyre: | 130/90-16 | 180/55 x 17 | 110/90 -18 |
| Dry Weight: | 188 kg / 414 lbs | 130 kg / 286.6 lbs | |
| Fuel Capacity: | 12.9 Liters / 3.4 US gal | 20 L / 5.3 US gal / 4.4 Imp gal | 12 Litres / 3.1 US gal |