Suzuki SP 370 (1978) vs Yamaha RD 250 (1977) vs Triumph Street Triple R (2009)
Comparison technical specifications
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| Make: | Suzuki | Yamaha | Triumph |
| Model: | SP 370 | RD 250 | Street Triple R |
| Years: | 1978 | 1977 | 2009 |
| Engine: | Four stroke, single cylinder, SOHC | Two stroke, torque induction, parallel twin | Four stroke, in-line 3-cylinder, DOHC, 12 valves |
| Capacity: | 369 cc / 22.5 cu in | 247 cc / 15.0 cu-in | 675 cc / 41.19 cu-in |
| Bore x Stroke: | 85 x 65.2 mm | 54 х 54 mm | 74 x 52.3 mm |
| Compression Ratio: | 8.9:1 | 6.7:1 | 12.65:1 |
| Cooling System: | Air cooled | Air cooled | Liquid-cooled |
| Induction: | 1 x 32mm Mikuni BS32SS carburetor | 2x Mikuni VM28 SC carburetor | Multipoint sequential electronic fuel injection with forced air induction |
| Ignition: | Magneto battery point | Battery and coil with breaker points | Digital - inductive type |
| Starting: | Kick | Kick | Electric |
| Max Power: | 18.5 kW / 24.8 hp @ 7500 rpm | 30 hp / 22.3 kW @ 7500 rpm | 79 kW / 107 hp @ 11700 rpm |
| Max Torque: | 28 Nm / 2.86 kgf-m / 20.7 lb-ft @ 4000 rpm | 21 lb-ft / 2.9 kgf-m @ 7000 rpm | 69 Nm / 7.0 kgf-m / 51 ft-lb @ 9100 rpm |
| Transmission: | 5 Speed | 6 Speed | 6 Speed |
| Final Drive: | Chain | Chain | O-ring chain |
| Front Suspension: | Telescopic fork, oil/gas damped | Telescopic forks | 41mm Kayaba upside down forks, with adjustable preload, rebound and compression damping, |
| Rear Suspension: | Full floater, swingarm | Dual shocks | Kayaba monoshock with piggy back reservoir, adjustable for preload, rebound and compression damping, |
| Front Brakes: | 150 mm Drum | Single 267mm disc | 2 x 308mm Floating discs, Nissin4 piston radial calipers |
| Rear Brakes: | 150 mm Drum | Single 267mm disc | Single 220 mm disc, 1 piston caliper |
| Front Tyre: | 3.00 -21 | 3.00S-18-4PR | 120/80 ZR17 |
| Rear Tyre: | 4.00 -18 | 3.50S-18-4PR | 180/55 ZR17 |
| Dimensions: | Length: 2200 mm / 86.6 in Width: 850 mm / 33.5 in Height: 1180 mm / 46.5 in | Length 1995 mm / 78.5 in Width 830 mm / 32.6 in Height 1085 mm / 42.7 in | Length 2030mm / 79.9 in Width (handlebars) 755mm / 29.7 in Height without mirrors 1110mm / 43.7 in |
| Fuel Capacity: | 8.5 Litres / 2.2 US gal / 1.9 Imp gal | 16.5 Liters / 4.2 US gal | 17.4 Litres / 4.6 US gal / 3.8 Imp gal |