KTM 690 Duke (2009) vs KTM 990 Supermoto T (2009) vs KTM Comet 125 RS (1976) vs KTM 400 EXC (2009-10) vs KTM RC 390 (2020)
Comparison technical specifications
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| Make: | KTM | KTM | KTM | KTM | KTM |
| Model: | 690 Duke | 990 Supermoto T | Comet 125 RS | 400 EXC | RC 390 |
| Years: | 2009 | 2009 | 1976 | 2009-10 | 2020 |
| Engine: | Four stroke, single cylinder, SOHC, 4 valves | Four stroke, 75°V-twin cylinder, DOHC, 4 valves per cylinder | Single cylinder, two stroke | Four stroke, single cylinder, SOHC, 4 valves | Four stroke, single cylinder. DOHC with finger followers, 4 Valve per cylinder |
| Capacity: | 653.7 cc / 39.91 cu in | 999.8 cc / 60.9 cu-in | 124 cc / 7.57 cu in | 393 cc / 24.0 cu-in | 373 cc / 22.7 cu-in |
| Bore x Stroke: | 102 x 80 mm | 101 x 62.4mm | 54 x 54 mm | 95 x 55.5 mm | 89 x 60 mm |
| Cooling System: | Liquid Cooled | Liquid cooling, | Air cooled | Liquid cooled | Liquid Cooled |
| Compression Ratio: | 11.8:1 | 11.5:1 | 11.8:1 | 11.1:1 | 12.6:1 |
| Induction: | Generation Keihin EMS with EPT (Electric Power Throttle) | Keihin EMS With FPT fuel injection | Carburetor | Keihin MX-FCR 3900D | Bosch Injection |
| Starting: | Electric | Electric | Kick | Electric & kick | Electric |
| Max Power: | 46 kW / 65 hp @ 7500 rpm | 116 hp / 85 kW @ 9000 pm | 12.4 kW / 17 hp @ 7500 rpm | 32.1 kW / 44 hp @ 8000 rpm | 32 kW / 43 hp @ 9500 rpm |
| Transmission: | 6 Speed | 6 Speed | 6-Speed | 6 Speed | 5 Speed |
| Final Drive: | Chain X-Ring 5/8 x 5/16" | Chain 5/8 x 5/16" X Ring | Chain | Chain, X-ring, 5/8 x 1/4" | Chain 5/8 x 1/4” X‑Ring |
| Front Suspension: | WP Upside-down forks, 4860 ROMA | 48mm WP USD adjustable | Telescopic fork | WP 4860 MXMA PA upside down fork | WP Suspension Up Side Down |
| Rear Suspension: | WP monoshock, 4618 with Pro-lever deflector | WP shock, fully adjustable | Twin shocks springs | Fully adjustable WP PDS 5018 DCC shock | WP Monoshock |
| Front Brakes: | Single 320 mm floating disc, radially screwed four-piston brake caliper | 2x 305mm discs 4 piston calipers | Single disc | Single 260 mm disc, Brembo double piston floating caliper, sintered pad | Single 320 mm disc 4 piston radial caliper |
| Rear Brakes: | Single 240 mm floating disc, single piston caliper | Single 240mm disc 2 piston caliper | Single disc | Single 220 mm disc, Brembo single piston floating caliper, organic pads | Single 230 mm disc 1 piston caliper |
| Front Tyre: | 120/70 - R17 | 120/70 ZR17 | 2.75 x 17 | 90/90 - 21 M/C 54M M+S TT, Metzeler MCE 6 Days Extreme | 110/70 R17 |
| Rear Tyre: | 160/60 - R17 | 180/55 ZR17 | 3.00 x 17 | 140/80 - 18 M/C 70M M+S TT, Metzeler MCE 6 Days Extreme | 150/60 R17 |
| Fuel Capacity: | 13.5 Litres / 3.6 US gal / 3.0 Imp gal | 19 Litres / 5.0 gal | 9.5 L / 2.5 US gal / 2.1 Imp gal | 9 Litres / 2.4 US gal / 2.0 Imp gal | 10 Liters / 2.64 lbs |