Moto Guzzi Quota 1100ES (1997-99) vs Ducati 125 Six Days (1977-78) vs Ducati 750 Paso Limited (1988) vs Aprilia Tuono 125 (2021)
Comparison technical specifications
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| Make: | Moto Guzzi | Ducati | Ducati | Aprilia |
| Model: | Quota 1100ES | 125 Six Days | 750 Paso Limited | Tuono 125 |
| Years: | 1997-99 | 1977-78 | 1988 | 2021 |
| Engine: | Four stroke, 90° V twin, longitudinally mounted, OHV, 2 valve per cylinder. | Two stroke, single cylinder, piston port | Four stroke, 90°“L” twin cylinder, SOHC desmodromic 2 valve per cylinder, belt driven | Four stroke, single cylinder, DOHC, 4 valves |
| Capacity: | 1064 cc / 64.9 cu-in | 123.7 cc / 7.5 cu in | 748 cc / 45.6 cu in | 124.2 cc / 7.6 cu-in |
| Bore x Stroke: | 92 x 80 mm | 54 x 54 mm | 88 x 61.5 mm | 58 X 47 mm |
| Compression Ratio: | 9.5:1 | 14.6:1 | 10:1 | 12.0-12.6 : 1 |
| Induction: | Weber-Marelli fuel-injection | Dell'Orto PHBE 32 carburetor | Weber 44DCNF 107 carburetor | ECU Electronics Magneti Marelli MIUG4 32 mm |
| Ignition: | Electronic | Motoplat electronic | Kokusan electronic | Electronic with CDI capacity discharge |
| Starting: | Electric | Kick | Electric | Electric |
| Max Power: | 70 hp / 51 kW @ 6200 rpm | 18.38 kW / 25 hp @ 10250 rpm | 53.3 kW / 72.5 hp @ 7900 rpm | 11 kW / 14.7 hp @ 10000 rpm |
| Transmission: | 5 Speed | 6-Speed | 5 Speed | 6 Speed |
| Final Drive: | Shaft | Chain | Chain | Chain, drive ratio: 13/58 |
| Front Suspension: | 42mm Marzocchi fork | 35mm Marzocchi with magnesium forks | 42 mm Marzocchi M1R fork | 40 mm Upside down fork stanchions |
| Rear Suspension: | Marzocchi monoshock with preload and rebound damping adjustment | Swinging arm with dual Marzocchi shocks | Öhlins mono shock, rising rate swingarm | Asymmetrical swingarm, monoshock absorber |
| Front Brakes: | 2x 296mm discs 2 piston calipers | 125 mm drum | 2 x 280 mm Discs | Single 300 mm stainless steel disc, 4 pistons radial caliper |
| Rear Brakes: | Single 260mm disc 2 piston caliper | 140 mm drum | Single 270 mm disc | Single 220 mm stainless steel disc, single piston calliper. Metal-braided connecting hoses |
| Front Tyre: | 90/90-121 | 3.00 x 21 | 110/90 -18 | 100/80 - 17 |
| Rear Tyre: | 130/80-17 | 4.00 x 18 | 140/90 -15 | 140/70 ZR 17 |
| Wheelbase: | 1600 mm / 63 in | 1430 mm / 56.2 in | 1450 mm / 57.1 in | 1350 mm / 53.1 in |
| Seat Height: | 820 mm / 32.3 in | 900 mm / 35.4 in | 780 mm / 30.7 in | 810 mm / 31.8 in |
| Fuel Capacity: | 20 Litres / 5.3 US gal | 8 Litres / 2.11 Us gal | 22 L / 5.8 US gal / 4.8 Imp gal | 14.5 Litres / 3.8 US gal |