Aprilia AF1 125 Futura (1991-) vs Aprilia Pegaso 650 (1999-00) vs Aprilia ETX 125 (1997-98)
Comparison technical specifications
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| Make: | Aprilia | Aprilia | Aprilia |
| Model: | AF1 125 Futura | Pegaso 650 | ETX 125 |
| Years: | 1991- | 1999-00 | 1997-98 |
| Engine: | Two stroke, single cylinder light alloy and barrel with GILNISIL surface coating | Four stroke, single-cylinder, DOHC, 5 valves | Two stroke single cylinder with laminar suction and separate lubrication |
| Capacity: | 124.7 cc / 7.6 cu in | 652 cc / 39.8 cu in | 124.8 cc / 7.6 cu in |
| Bore x Stroke: | 54 x 54.5 mm | 100 x 83 mm | 54 x 54.5 mm |
| Compression Ratio: | 13.6:1 | 9.1:1 | 15.5:1 |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled |
| Induction: | Dell'Orto Ø 34mm flat slide carburetor | 2 x Ø32 mm Mikuni BST33 | Dell'Orto PHBH 28 carburetor |
| Starting: | Electric | Electric | Kick |
| Transmission: | 6 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain |
| Front Suspension: | Upside down fork, Ø 38 mm | Ø45 mm Upside down forks preload adjustable, Marzocci | Hydraulically operated telescopic fork |
| Rear Suspension: | Aprilia Progressive System with hydraulic single shock-absorber, 1120mm wheel travel | Varying section high strength steel swing-arm, Aprilia Progressive System (APS) rising rate linkage | Hydraulic adjustable mono-shock |
| Front Brakes: | Single Ø 320 mm disc, 4 piston caliper | Single Ø300 mm disc, 2 piston caliper | Single disc, Ø250 mm |
| Rear Brakes: | Single Ø 240 mm disc, 2 piston caliper | Single Ø220 mm disc, 1 piston caliper | Single disc, Ø220 mm |
| Front Tyre: | 100/80 -17 | 100/90-19 | 90/90 - 21 54R or 54S or 80/100 - 21 51R |
| Rear Tyre: | 140/70 -17 | 130/80-17 | 120/80 - 18 62S or 120/90 - 18 65R or 65P |
| Wet Weight: | 140 kg / 309 lbs | 175 kg / 385 lbs | 129 kg / 284 lbs |
| Fuel Capacity: | 14.5 Litres / 3.8 US gal | 21 Litres / 5.5 US gal | 11 Litres / 2.9 US gal |