Yamaha XS 250 (1977-81) vs Yamaha TT-R 250 (1997-98) vs Yamaha XJ 600N (1998-00) vs BMW F 800GS (2014) vs Yamaha XV 125S Virago (1997-02)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha | BMW | Yamaha |
| Model: | XS 250 | TT-R 250 | XJ 600N | F 800GS | XV 125S Virago |
| Years: | 1977-81 | 1997-98 | 1998-00 | 2014 | 1997-02 |
| Engine: | Four stroke, 180° parallel twin, SOHC, 2 valves per cylinder | Four stroke, single cylinder, DOHC, 4-valve per cylinder. | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder | Four stroke, parallel twin cylinder, DOHC, 4 valves per cylinder | Four stroke, V-twin cylinder, 2 valves per cylinder. |
| Capacity: | 248 cc / 15.2 cu-in | 249 cc / 15.1 cu-in | 599 cc / 36.5 cu-in | 798 cc / 47.7 cub. in. | 124 cc / 7.6 cu-in |
| Bore x Stroke: | 55 х 52.4 mm | 73 x 59.6 mm | 58.5 x 55.7 mm | 82 x 75.8 mm | 41 x 47 mm |
| Compression Ratio: | 9.6:1 | 10.3:1 | 10:1 | 12.0:1 | NA |
| Induction: | 2x 32mm Mikuni carburators | TEIKEI Y30P carb | 4x 28mm Mikuni BDS28 downdraft carburettors | Electronic intake injection, ∅45mm throttle bodies | Carburetor |
| Ignition: | Coil and cb | Digital CDI | Transistor | Knock control and oxygen sensors | CDI |
| Starting: | Kick | Electric | Electric | Electric | Electric |
| Max Power: | 27 hp / 20.1 kW @ 9500 rpm | 28 hp / 20.6 kW @ 8500 rpm | 61 hp / 45 kW @ 8.500 rpm | 62.5 kW / 85 hp @ 7500 rpm | 11 hp / 8 kW @ 10000 rpm |
| Max Torque: | 2.2 kgf-m / 15.9 lb-ft @ 8500 rpm | 2.8 kgf-m / 27.1 Nm / 20.0 lb-ft @ 7000 rpm | 33.9 lb-ft / 4.7 kgf-m @ 7000 rpm | 80 Nm / 8.2 kgf-m / 59 lb-ft @ 5750 rpm | 9.4 Nm / 6.9 lb-ft @ 7500 rpm |
| Transmission: | 6 Speed | 6 Speed | 6 Speed | 6 Speed | 5 Speed |
| Final Drive: | Chain | Chain | Chain | Chain | Chain |
| Front Suspension: | Telescopic forks | Telescopic forks, Coil air spring oil damper | 38mm Telescopic forks, no adjustment | 43mm Marzocchi. Upside down forks, | Telescopic forks |
| Rear Suspension: | Dual shocks, swing arm, 5-position preload adjustable | Monocross, Single shock, link-type, w/adjustable preload | Monocross monoshock adjustable for preload | Double strut swing arm aluminium coast in one piece, | Dual shocks |
| Front Brakes: | Single 267mm disc | Single 245mm disc | 2x 298mm discs 2 piston calipers | 2 x ∅300mm discs, 4 piston calipers, ABS | Single 282mm disc |
| Rear Brakes: | 178mm Drum | Single 220mm disc | Single 245mm disc 2 piston caliper | Single ∅265mm disc, 2 piston caliper, ABS | 130mm drum |
| Front Tyre: | 3.00-18 | 3.00-21 | 110/80H17 | 90/90 - 21 54V | 80/100-18 |
| Rear Tyre: | 3.50-18 | 4.60-18 | 130/70H18 | 150/70 - 17 69V | 130/90-15 |
| Seat Height: | 810 mm / 31.8 in | 914 mm / 36.0 in | 770 mm / 30.3 in | 880 mm - 820 mm / 34.6 in. - 32.3 in. | 685 mm / 27.0 in |
| Dry Weight: | 165.5 kg / 365 lbs | 113 kg / 249 lbs | 193 kg / 425 lbs | 177.8 kg / 392 lbs | 139.0 kg / 306.4 lbs |
| Fuel Capacity: | 14 Litres / 3.7 US gal | 10.2 Litres / 2.7 US gal | 17 Litres / 4.4 US gal | 16 Litres / US 4.2 gal. | 9.5 Litres / 2.5 US gal |