Triumph America (2002-03) vs Triumph Street Cup (2017-18) vs Triumph Bonneville 650 T120 (1972)
Comparison technical specifications
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| Make: | Triumph | Triumph | Triumph |
| Model: | America | Street Cup | Bonneville 650 T120 |
| Years: | 2002-03 | 2017-18 | 1972 |
| Engine: | Four stroke, parallel twin cylinder, DOHC, 4 valves per cylinder | 270° Crank angle parallel twin, DOHC, 8 valves | Four stroke, parallel twin, OHV |
| Capacity: | 790 cc / 48.2 cu in | 900 cc / 54.9 cu in | 649 cc / 39.6 cu in |
| Bore x Stroke: | 86 x 68 mm | 84.6 x 80 mm | 71 x 82 mm |
| Cooling System: | Air-cooled | Liquid cooled | Air cooled |
| Compression Ratio: | 9.2:1 | 10.55:1 | 9.0:1 |
| Induction: | Twin 35 mm carburetors | Multipoint sequential electronic fuel injection | 2 x 30 mm Amal concentric carburetors |
| Ignition: | Digital CDI | Digital | Battery, coil |
| Starting: | Electric | Electric | Kick |
| Max Power: | 45.2 kW / 62 hp @ 7400 rpm | 40.5 kW / 55 hp @ 5900 rpm | 37.3 kW / 50 hp @ 7000 rpm |
| Clutch: | Wet, multiple discs, cable operated | Wet, multi-plate, torque assist | Multi-disc, wet |
| Transmission: | 5 Speed | 5-Speed | 4 Speed |
| Final Drive: | Chain | Chain, X-ring | Chain |
| Front Suspension: | 41 mm Fork | Kayaba 41 mm cartridge fork | Telescopic forks |
| Rear Suspension: | Chrome spring twin shocks with adjustable preload | Kayaba twin shocks with adjustable preload | Swinging arm, dual shocks |
| Front Brakes: | Single 310mm disc, 2 piston caliper, Nissen | Single 310mm disc, Nissin 2 piston floating caliper, ABS | Drum |
| Rear Brakes: | Single 255mm disc, 2 piston caliper, Nissen | Single 255mm disc, Nissin 2 piston floating caliper, ABS | Drum |
| Front Tyre: | 110/90 R18 Bridgestone | 100/90-R18 | 3.25 -19 |
| Rear Tyre: | 170/80 R15 Bridgestone | 150/70-R17 | 4.00 -18 |
| Fuel Capacity: | 17 Litres / 4.4 US gal / 3.7 Imp gal | 12 L / 3.2 US gal / 2.7 Imp gal | 16L / 4.2 US gal / 3.5 Imp gal |