KTM 250 Duke (2015-17) vs KTM 990 Adventure R (2011) vs Vespa ET2 50 (2001-05)
Comparison technical specifications
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| Make: | KTM | KTM | Vespa |
| Model: | 250 Duke | 990 Adventure R | ET2 50 |
| Years: | 2015-17 | 2011 | 2001-05 |
| Engine: | Four stroke, single cylinder, DOHC, 4 valves per cylinder | Four stroke, 75°V-twin cylinder, DOHC, 4 valves per cylinder | Two stroke, single cylinder |
| Capacity: | 248.8 cc / 15.2 cu in | 999.8 cc / 60.9 cu-in | 49.3 cc / 3.0 cub in |
| Bore x Stroke: | 72 x 61.1 mm | 101 x 62.4mm | 40 x 39.3 mm |
| Compression Ratio: | 12.5:1 | 11.5;1 | 11:1 |
| Ignition: | Bosch EMS, contactless controlled fully electronic ignition with digital ignition adjustment | Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment | Electric |
| Max Power: | 23.0 kW / 30.87 hp @ 9000 rpm | 116 hp / 85 kW @ 9000 pm | 3 kW / 5.1 hp @ 7500 rpm |
| Max Torque: | 24 Nm / 2.45 kgf-m / 17.7 ft-lb @ 7250 rpm | 100 Nm / 73.8 lb-ft @ 6500 rpm | 4.4 Nm / 0,45 kgf-m / 3.2 ft/lb @ 6500 rpm |
| Clutch: | Wet multi-disc clutch, mechanically operated | Wet Multi-disc hydraulically operated, | Automatic, dry centrifugal |
| Transmission: | 6 Speed | 6 Speed | Centrifugal automatic gearbox |
| Final Drive: | Chain 520 O-Ring 5/8 x 1/4" | Chain, X-Ring 5/8 x 5/16" | Belt |
| Frame: | Steel trellis frame, powder coated, steel sub frame, aluminium, tapered, Ø 26/22 mm handlebar. | Tubular cromoly spaced frame. powered coated | Loadbearing pressed sheet steel |
| Front Suspension: | WP-USD Ø 43 mm. | 48mm WP USD forks | Hydraulic single shock |
| Rear Suspension: | WP-Monoshock | WP-PDS rear shock, hydraulic spring preload | Hydraulic single shock |
| Front Brakes: | Single 300 mm disc, 4 piston caliper | 2x 300mm Brembo discs 2 piston calipers | 200 mm disc |
| Rear Brakes: | Single 230 mm disc, 1 piston caliper, floating | Single 240mm Brembo disc 1 piston caliper | 110 mm drum |
| Front Tyre: | 110/70 - ZR17 M/C 54W TL | 90/90 -21 | 100/80-10" |
| Rear Tyre: | 150/60 - ZR17 M/C 66W TL | 150/70 -R18 | 120/70-10" |
| Wheelbase: | 1367 mm / 53.8 in | 1570 mm / 61.8 in | 1280 mm / 50.4 in |
| Seat Height: | 800 mm / 31.5 in | 905 mm / 35.6 in | 805 mm / 31.7 in |
| Fuel Capacity: | 11 L / 2.9 US gal / 2.4 Imp gal | 19.5 Litres / 5.1 gal | 9 L / 2.4 US gal |