Indian Chief Vintage Dark Horse (2021) vs Norton Commando 750 Roadster MKII (1972) vs Ducati 125 Six Days (1977-78)
Comparison technical specifications
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| Make: | Indian | Norton | Ducati |
| Model: | Chief Vintage Dark Horse | Commando 750 Roadster MKII | 125 Six Days |
| Years: | 2021 | 1972 | 1977-78 |
| Engine: | Thunder Stroke™ 111 | Four stroke, parallel twin cylinder, push rod 2 valves per cylinder. | Two stroke, single cylinder, piston port |
| Capacity: | 1811.cc / 111 cu-in | 745 cc / 45.5 cu in | 123.7 cc / 7.5 cu in |
| Bore x Stroke: | 101 x 113 mm | 73 x 89 mm | 54 x 54 mm |
| Compression Ratio: | 9.5:1 | 9.0:1 | 14.6:1 |
| Starting: | Electric | Kick | Kick |
| Transmission: | 6 Speed | 4 Speed | 6-Speed |
| Final Drive: | Belt | Chain | Chain |
| Front Suspension: | 46mm Telescopic forks | Telescopic forks | 35mm Marzocchi with magnesium forks |
| Rear Suspension: | Single shock with air adjust | Dual shocks | Swinging arm with dual Marzocchi shocks |
| Front Brakes: | 2x 300 mm Floating rotor 4 piston calipers | Single 203 mm Drum | 125 mm drum |
| Rear Brakes: | Single 300 mm Floating rotor 2 piston calipers | Single 178 mm Drum | 140 mm drum |
| Front Tyre: | 130/80B17 65H | 3.25-19 | 3.00 x 21 |
| Rear Tyre: | 180/60R16 80H | 4.00-18 | 4.00 x 18 |
| Dimensions: | Length 2583 mm / 101.7 in Width 1000 mm / 39.4 in Height 1176 mm / 46.3 in | Length 2220 mm / 87.5 in Width 660 mm / 26 in | Length: 2150 mm / 84.6 in Width: 920 mm / 36.2 in Height: 1200 mm / 47.2 in |
| Wheelbase: | 1701 mm / 67 in | 1441 mm / 56.75 in | 1430 mm / 56.2 in |
| Seat Height: | 660 mm / 26.0 in | 863.6 mm / 34 in | 900 mm / 35.4 in |
| Dry Weight: | 342 kg / 754 lbs | 193 kg / 425 lbs | 98 kg / 216 lbs |
| Fuel Capacity: | 20.8 Litres / 5.5 US gal | 10 L / 2.6 US gal | 8 Litres / 2.11 Us gal |