KTM 690 Duke (2008) vs Suzuki GS 500F (2004) vs Ducati Supersport S (2019-20) vs Ducati 400SS Junior (Half Fairing) (1991-98)
Comparison technical specifications
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| Make: | KTM | Suzuki | Ducati | Ducati |
| Model: | 690 Duke | GS 500F | Supersport S | 400SS Junior (Half Fairing) |
| Years: | 2008 | 2004 | 2019-20 | 1991-98 |
| Engine: | Four stroke, single cylinder, SOHC, 4 valves | Four stroke, parallel twin cylinder | Testastretta 11°, L-Twin cylinder, 4 valve per cylinder, Desmodromic | Four stroke, 90°“L”twin cylinder, SOHC, desmodromic 2 valve per cylinder. |
| Capacity: | 653.7 cc / 39.91 cu in | 487 cc / 29.7 cu in | 937 cc / 57.2 cu in | 398 cc / 24.3 cu in |
| Bore x Stroke: | 102 x 80 mm | 74 x 56.6 mm | 94 x 67.5 mm | 70.5 x 51 mm |
| Cooling System: | Liquid Cooled | Air cooled | Liquid cooled | Air cooled |
| Compression Ratio: | 11.8:1 | 9.0:1 | 12.6:1 | 10.0:1 |
| Induction: | Generation Keihin EMS with EPT (Electric Power Throttle) | 2 x 33mm Mikuni BST carburetors | Electronic fuel injection system, 53 mm throttle bodies with full Ride-by-Wire | Mikuni B79 carburetor |
| Starting: | Electric | Electric | Electric | Electric |
| Max Power: | 46 kW / 65 hp @ 7500 rpm | 35.1 kW / 45.5 hp @ 9200 rpm | 82 kW / 110 hp @ 9000 rpm | 30.9 kW / 42 hp @ 10000 rpm |
| Max Torque: | 65 Nm / 6.6 kgf-m / 47.9 ft-lb @ 6550 rpm | 40 Nm / 4.1 kgf-m / 29.5 lb-ft @ 7500 rpm | 96.7 Nm / 9.9 kgf-m / 71.3 ft-lb @ 6500 rpm | 35.2 Nm / 3.6 kgf-m / 26 ft-lb @ 8500 rpm |
| Transmission: | 6 Speed | 6 Speed | 6-Speed | 6 Speed |
| Final Drive: | Chain X-Ring 5/8 x 5/16" | Chain | Chain; front sprocket 15; rear sprocket 43 | Chain |
| Front Suspension: | WP Upside-down forks, 4860 ROMA | Telescopic forks, 7-way preload adjustment | Fully adjustable 48 mm usd Öhlins fork | Marzocchi inverted telescopic fork, 40USD/E |
| Rear Suspension: | WP monoshock, 4618 with Pro-lever deflector | Rising rate single shock, 7-way preload adjustment | Progressive linkage with adjustable Öhlins monoshock. Aluminium single-sided swingarm | Cantilever swingarm, Marzocchi PBS1R monoshock, preload and rebound damping |
| Front Brakes: | Single 320 mm floating disc, radially screwed four-piston brake caliper | Single 310mm disc, 4 piston caliper | 2 x 320 mm Semi-floating discs, radially mounted Monobloc Brembo M4-32 callipers, 4-piston, radial pump with Bosch ABS | Single 320 mm disc |
| Rear Brakes: | Single 240 mm floating disc, single piston caliper | Single 250mm disc, 2 piston caliper | 245 mm disc, 2-piston caliper, Bosch ABS | Single 245 mm disc |
| Front Tyre: | 120/70 - R17 | 110/70 H17 | Pirelli Diablo Rosso III 120/70 ZR17 | 130/60 VR17 |
| Rear Tyre: | 160/60 - R17 | 130/70 H17 | Pirelli Diablo Rosso III 180/55 ZR17 | 160/60 VR17 |
| Seat Height: | 865 mm / 34 in | 790 mm / 31.1 in | 810 mm / 31.9 in | 750 mm / 29.5 in |
| Dry Weight: | 148.5 kg / 327 in | 173 kg / 381 lbs | 183 kg / 403 lbs | 173 kg / 381 lbs |
| Fuel Capacity: | 13.5 Litres / 3.6 US gal / 3.0 Imp gal | 20 Litres / 5.3 US gal / 4.4 Imp gal | 16 Litres / 4.2 US gal / 3.5 Imp gal | 17 L / 4.5 US gal / 3.7 Imp gal |