KTM 660 SMC (2003-06) vs AJS R7 Track Racer (1930) vs Yamaha TMAX 560 / TMAX Tech MAX (2025) vs Ducati 900 SS (1980)
Comparison technical specifications
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| Make: | KTM | AJS | Yamaha | Ducati |
| Model: | 660 SMC | R7 Track Racer | TMAX 560 / TMAX Tech MAX | 900 SS |
| Years: | 2003-06 | 1930 | 2025 | 1980 |
| Engine: | Four stroke, single cylinder, SOHC, 4 valves | Single cylinder, OHC | Four stroke, parallel twin cylinder, DOHC, 4 valves per cylinder | Four stroke, 90°“L”twin cylinder, SOHC, 2 valves per cylinder, bevel gear driven |
| Capacity: | 653.7 cc / 39.9 cu-in | 350 cc / 21.4 cub in | 562 cc / 32.49 cu-in | 864 cc / 52.7 cu in |
| Cooling System: | Liquid Cooled | Air cooled | Liquid cooled | Air cooled |
| Transmission: | 5 Speed | Close ratio gearbox | V-belt automatic | 5 Speed |
| Front Suspension: | 50 mm WP upside-down fork | Girder fork | Telescopic forks | Marzocchi telescopic fork |
| Rear Suspension: | WP monoshock, swinging arm | Ridged, spring loaded saddle | Swingarm, link suspension | Marzocchi 330 mm dual shocks, 3-way adjustable |