Yamaha TDR 250 (1990-91) vs Kawasaki GTR 1400 Concours 14 (2007-08) vs Aprilia ETV Mana Prototype (2003) vs Ducati 200 Super Sport (1959-65)
Comparison technical specifications
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| Make: | Yamaha | Kawasaki | Aprilia | Ducati |
| Model: | TDR 250 | GTR 1400 Concours 14 | ETV Mana Prototype | 200 Super Sport |
| Years: | 1990-91 | 2007-08 | 2003 | 1959-65 |
| Engine: | Two stroke, parallel twin cylinder, read valve, YPVS | Four stroke, transverse four cylinders, DOHC, 4 valves per cylinder | Four stroke, longitudinal 60°V twin, DOHC, 4 valves per cylinder | Four stroke, single cylinder, SOHC, shaft and bevel gear driven, 2 valves per cylinder |
| Capacity: | 249 cc / 15.2 cu-in | 1352 cc / 82.5 cu-in | 997.6 cc / 54.2 cu in | 203.8 cc / 12.4 cu in |
| Bore x Stroke: | 56.4 х 50 mm | 84 x 61 mm | 97 x 67.5mm | 67 x 57.8 mm |
| Compression Ratio: | 5.9:1 | 10.7;1 | 10.4:1 | 7.8:1 |
| Induction: | 2x 28mm TM28SS Mikuni carburetors | Fuel injection: ø40 mm x 4 | Indirect multipoint electronic injection. Ø47 mm throttle bodies | Dell'Orto UBF24BS carburetor |
| Ignition: | Transistorized | Digital | Digital electronic with two spark plugs per cylinder | Points & coil, 6V 40 W generator |
| Starting: | Kick | Electric | Electric | Kick |
| Max Power: | 46 hp / 37 kW @ 10000 rpm | 114 kW / 155 hp @ 8800 rpm | 74.6 kW / 100 hp @ 8250 rpm | 13.1 kW 18 hp @ 7500 rpm |
| Transmission: | 6 Speed | 6 Speed | 6 Speed | 4 Speed |
| Final Drive: | Chain | Shaft | Chain | Chain |
| Front Suspension: | Air assisted telescopic forks 7-way adjustable preload | 43 mm inverted fork with adjustable rebound damping and spring preload | Marzocchi hydraulic fork, sleeve Ø50 mm. | Hydraulic telescopic forks, Ducati 31.5 mm |
| Rear Suspension: | Single shock rising rate adjustable preload | Bottom link Unit-Trek with gas charged shock, Tetra lever rebound damping | Single swingarm in aluminium alloy, progressive linkage | Swingarm, dual Marzocchi shocks, 3-way adjustable |
| Front Brakes: | Single 320mm disc 2 piston calipers | 2X 310mm discs 4 piston calipers | 2 x Ø320 mm discs, 4 piston calipers | 180 mm Drum |
| Rear Brakes: | Single 210mm disc single piston caliper | Single 270mm disc 2 piston caliper | Single Ø220 mm disc, 2 piston caliper | 160 mm Drum |
| Fuel Capacity: | 14 Litres / 3.6 US gal | 22 Litres / 5.8 US gal | 20 Litres / 5.3 US gal | 17 L / 4.5 US gal / 3.7 Imp gal |