KTM 990 Super Duke (2009) vs Suzuki GSX-R 400 SP (1986) vs Suzuki GSX-R 400R SP (1989-90) vs Suzuki RH 250X (1987)
Comparison technical specifications
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| Make: | KTM | Suzuki | Suzuki | Suzuki |
| Model: | 990 Super Duke | GSX-R 400 SP | GSX-R 400R SP | RH 250X |
| Years: | 2009 | 1986 | 1989-90 | 1987 |
| Engine: | Four stroke, 75°V-twin cylinder, DOHC, 4 valves per cylinder | Four stroke, transverse four cylinder, DOHC 4 valves per cylinder. TSCC | Four stroke, transverse four cylinder, DOHC 4 valves per cylinder. TSCC | Two stroke, single cylinder |
| Capacity: | 999.8 cc / 60.9 cu-in | 398 cc / 24.3 cu-in | 398 cc / 24.3 cu-in | 249 cc / 15.2 cu in |
| Bore x Stroke: | 101 x 62.4mm | 53 x 45.2 mm | 56 x 40.4 mm | 70 x 64.8 mm |
| Cooling System: | Liquid cooling, | Liquid cooled | Liquid cooled | Liquid cooled |
| Induction: | Electronic fuel injection / electric | 2 x AS27VW carburetors | Slingshot carburetors | Mikuni VM 32 SS carburetor |
| Ignition: | Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment | CDI | CDI | Suzuki PEI |
| Starting: | Electric | Electric | Electric | Kick |
| Max Power: | 88 kW / 120 hp @ 9000 rpm | 44 kW / 59 hp @ 11000 rpm | 44 kW / 59 hp @ 11000 rpm | 23.1 kW / 31 hp @ 7500 rpm |
| Max Torque: | 100 Nm @ 7000 rpm | 39.2 Nm / 4.0 kgf-m / 28.9 lb-ft @ 9000 rpm | 39.2 Nm / 4.0 kgf-m / 28.9 lb-ft @ 9000 rpm | 31.2 Nm / 3.18 kgf-m / 23.0 lb-ft @ 6500 rpm |
| Clutch: | Wet multi-disc clutch, operated hydraulically | Wet multi-plate | Wet multi-plate | Wet, multi-plate |
| Transmission: | 6 Speed | 6 Speed, constant mesh | 6 Speed, constant mesh | 6 Speed |
| Final Drive: | Chain, X-Ring 5/8 x 5/16" | Chain | Chain | Chain |
| Front Suspension: | 48mm WP Upside down adjustable | Telescopic forks | Telescopic forks | Telescopic forks, oil dampened |
| Rear Suspension: | WP shock, fully adjustable | Full floater swing arm, non-adjustable | Full floater swing arm, non-adjustable | Full floater mono shock, preload adjustable |
| Front Brakes: | 2x 320mm discs 4 piston calipers | 2 x Discs, 4 piston calipers | 2 x Discs, 4 piston calipers | Single disc |
| Rear Brakes: | Single 240mm disc 1 piston caliper | Single disc, 2 piston caliper | Single disc, 2 piston caliper | Drum |
| Front Tyre: | 120/70 ZR17 | 110/90-16 | 110/70-R17 53H | 3.00-21 |
| Rear Tyre: | 180/55 ZR17 | 140/90-18 | 140/60-R18 64H | 130/80-17 |
| Fuel Capacity: | 18.5 Litres / 4.8 gal | 15 Litres / 3.96 US gal / 3.3 Imp gal | 15 Litres / 3.96 US gal / 3.3 Imp gal | 12 Litres / 3.2 US gal / 2.6 Imp gal |