KTM 450 EXC-F (2019-20) vs KTM 990 Supermoto T Limited Edition (2010) vs Norton Commando 850 Roadster MKII (1975)
Comparison technical specifications
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| Make: | KTM | KTM | Norton |
| Model: | 450 EXC-F | 990 Supermoto T Limited Edition | Commando 850 Roadster MKII |
| Years: | 2019-20 | 2010 | 1975 |
| Engine: | Four stroke, single cylinder, SOHC, 4 valves per cylinder | Four stroke, 75°V-twin cylinder, DOHC, 4 valves per cylinder | Four stroke, parallel twin cylinder, push rod 2 valves per cylinder. |
| Capacity: | 449.3 cc / cu-in | 999.8 cc / 60.9 cu-in | 829 cc / 50.6 cu in |
| Bore x Stroke: | 95 x 63.4 mm | 101 x 62.4mm | 77 x 89 mm |
| Cooling System: | Liquid cooled | Liquid cooling, | Air cooled |
| Compression Ratio: | 11.9:1 | 11.5:1 | 8.5:1 |
| Induction: | Keihin MX FCR 39 carburetor | Keihin EMS With FPT fuel injection | 2 x Ø32 mm Amal concentric carburetors |
| Ignition: | Keihin EMS | Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment | 120W Lucas alternator |
| Starting: | Electric | Electric | Electric and kick |
| Clutch: | Wet, DDS multi-disc clutch, Brembo hydraulics | Wet multi-disc clutch, operated hydraulically | Metal diaphragm clutch |
| Transmission: | 6 Speed | 6 Speed | 4 Speed |
| Final Drive: | Chain X-Ring 5/8 x 1/4″ | Chain 5/8 x 5/16" X Ring | Chain |
| Frame: | 25CrMo4 steel central-tube frame | Tubular Chromoly space frame powered coated. | Twin downtube cradle with Isolastic engine mounts |
| Front Suspension: | WP XACT USD fork, Ø 48 mm | 48mm WP USD adjustable | Telescopic forks |
| Rear Suspension: | WP XACT Monoshock with Linkage | WP shock, fully adjustable | Swing arm with Girling coil springs |
| Front Brakes: | Single 260 mm disc, floating caliper | 2x 305mm discs 4 piston calipers | Single disc |
| Rear Brakes: | Single 220mm disc, floating caliper | Single 240mm disc 2 piston caliper | Single disc |
| Front Tyre: | 90/90 - 21 | 120/70 ZR17 | 4.10-19 |
| Rear Tyre: | 140/80 - 18 | 180/55 ZR17 | 4.10-19 |
| Fuel Capacity: | 8.5 Litres / 2.2 US gal | 19 Litres / 5.0 gal | 19 Litres / 5.0 US gal |