Ducati 620 Sport (2003) vs Ducati 450 R/T (1971)
Comparison technical specifications
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| Make: | Ducati | Ducati |
| Model: | 620 Sport | 450 R/T |
| Years: | 2003 | 1971 |
| Engine: | Four stroke, 90°“L”twin cylinder, SOHC, desmodromic 2 valve per cylinder, belt driven | Four stroke, single cylinder, SOHC, bevel gear driven |
| Capacity: | 618 cc / 37.7 cu in | 435.7 cc / 26.6 cu in |
| Bore x Stroke: | 80 x 61.5 mm | 86 x 75 mm |
| Compression Ratio: | 10.5:1 | 9.0:1 |
| Cooling System: | Air cooled | Air cooled |
| Induction: | Marelli CPU 5.9M electronic fuel injection, 45 mm throttle body | Dell'Orto VHB 29 AD |
| Ignition: | Marelli electronic | Flywheel magneto |
| Starting: | Electric | Kick |
| Max Power: | 45 kW / 61hp @ 8750 rpm | 38 hp / 28.3 kW @ 6500 rpm |
| Clutch: | Wet, multiplate | Wet, multiplate |
| Transmission: | 5 Speed | 5 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | Marzocchi 43 mm upside-down fork | Marzocchi telescopic fork |
| Rear Suspension: | Progressive cantilever linkage with fully adjustable, Sachs Boge monoshock with position-sensitive damping | Swingarm, dual Marzocchi shocks |
| Front Brakes: | 2x 320 mm Discs, 4 piston calipers | Drum |
| Rear Brakes: | Single 245 mm disc, 2 piston caliper | Drum |
| Front Tyre: | 120/70 ZR17 | 3.00-21 |
| Rear Tyre: | 160/60 ZR17 | 4.00-18 |
| Wheelbase: | 1405 mm / 55.3in | 1435.1 mm / 56.5 in |
| Seat Height: | 815mm / 32.1in | 838.2 mm / 33.0 in |
| Fuel Capacity: | 16 L / 4.2US gal / 3.5 Imp gal | 8.5 L / 2.25 US gal |