Yamaha XS 650F (1979) vs Yamaha YZF1000 R1 (2003)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | XS 650F | YZF1000 R1 |
| Years: | 1979 | 2003 |
| Engine: | Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder. | Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder. |
| Capacity: | 653 cc / 39.8 cu in | 998 cc / 60.9 cu-in |
| Bore x Stroke: | 75 x 74 mm | 74 x 58 mm |
| Compression Ratio: | 8.4:1 | 11.8:1 |
| Cooling System: | Air cooled | Liquid cooled |
| Lubrication: | Wet sump | Wet sump |
| Induction: | 2 x Mikuni BS38 carburetors | Fuel injection, dual-valve throttle bodies with motor-driven secondary valves, 45 mm throttle body |
| Ignition: | Battery, induction coil | Digital TCI |
| Starting: | Electric and kick | Electric |
| Max Power: | 39.5 kW / 53 hp @ 7200 rpm | 152 hp / 110.8 kW @ 10500 rpm |
| Max Torque: | 54 Nm / 5.5 kgf-m / 39.8 lb-ft @ 6800 rpm | 104.9 Nm / 10.71 kg-m @ 8500 rpm |
| Transmission: | 5 Speed | 6 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | Telescopic forks | 43mm inverted telescopic forks, preload, compression and rebound damping adjustable. |
| Rear Suspension: | Dual shock absorbers | Truss-type Aluminium swinging arm Monocross, preload, compression and rebound damping adjustable. |
| Front Brakes: | Twin hydraulic discs, 267 mm | 2 x 298mm discs 4 piston calipers |
| Rear Brakes: | Drum | Single 220mm disc 4 piston caliper |
| Front Tyre: | 3.50H-19 4PR | 120/70 ZR17 |
| Rear Tyre: | 4.00H-18 4PR | 190/50 ZR17 |
| Dimensions: | Length: 2175 mm / 85.6" Width: 780 mm / 30.7" Height: 1090 mm / 42.9" | Length 2040 mm / 80.3 in Width 705 mm / 27.7 in Height 1105 mm / 43.5 in |
| Wheelbase: | 1435 mm / 56.5" | 1395 mm / 54.9 in |
| Ground Clearance: | 150 mm / 5.5" | 140 mm / 5.5 in |
| Seat Height: | 810 mm / 31.9" | 813 mm / 32.3 in |
| Dry Weight: | 191 kg / 420 lbs | 175 kg / 389.5 lbs |
| Wet Weight: | 217 kg / 478 lbs | 192 kg / 423 lbs |
| Fuel Capacity: | 15 Litres / 4.0 US gal | 18 Litres / 4.7 gal |
| Top Speed: | 185 km/h / 115 mph | 277.5 km/h / 172.4 mph |