Benelli 125TC (1979) vs Benelli BN 251 (2015-) vs Triumph Street Triple (2016) vs Benelli 650 Tornado S2 (1973-74)
Comparison technical specifications
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| Make: | Benelli | Benelli | Triumph | Benelli |
| Model: | 125TC | BN 251 | Street Triple | 650 Tornado S2 |
| Years: | 1979 | 2015- | 2016 | 1973-74 |
| Engine: | Twin cylinder , two stroke | Four stroke, single cylinder, DOHC, 4 valve | Liquid-cooled, four stroke, in-line 3-cylinder, DOHC, 12 valves | Parallel twin cylinders, four stroke, OHV, 2 valves per cylinder |
| Capacity: | 124.7 cc / 7.6 cu in | 249.2 cc / 15.2 cu in | 675 cc / 41.2 cub in. | 642.8 cc / 39.2 cu in |
| Bore x Stroke: | 42.5 x 44 mm | 72 x 61.2 mm | 74 x 52.3 mm | 84 x 58 mm |
| Compression Ratio: | 10.3:1 | 11.2:1 | 12.65:1 | 8.0:1 |
| Induction: | Dell'Orto SHB | Electronic fuel injection with 37mm Ø throttle body | Multipoint sequential electronic fuel injection with SAI | 2 x Dell'Orto VHB 29 carbs |
| Starting: | Kick | Electric | Electric | Electric and kick start |
| Max Power: | 12.7 kW / 17 hp @ 8000 rpm | 18 kW / 24.5 hp @ 9000 rpm | 78 kW / 106 hp @ 11850 rpm | 38.8 kW / 52 hp @ 7200 rpm |
| Transmission: | 5 Speed | 6 Speed | 6 Speed | 5 Speed |
| Final Drive: | Chain | Chain | O ring, chain | Chain |
| Front Brakes: | Single disc | Single 280 mm disc, 4-piston caliper | 2 x 310 mm Floating discs, Nissen 2 piston sliding calipers,ABS | Drum, 4 leading shoe |
| Rear Brakes: | Drum, expanding | Single 240 mm disc, 2-piston caliper | Single 220 mm disc, Brembo 1 piston caliper, ABS | Drum |
| Front Tyre: | 2.75-18 | 110/70-ZR17 | 120/70 ZR 17 | 3.50 -18 |
| Rear Tyre: | 3.00-18 | 140/60-ZR17 | 180/55 ZR 17 | 4.00 -18 |
| Dry Weight: | 113 kg / 249 lbs | 150 kg / 331 lbs | 168 kg / 370 lbs | 210 kg / 463 lbs |
| Fuel Capacity: | 12.5 Litres / 3.3 US gal | 16.5 Litres / 4.4 US gal | 17.4 Litres / 4.6 US gal / 3.8 Imp gal | 17 L / 4.5 US gal |