Aprilia AF1 125 Sport Pro (1992-93) vs Aprilia SX 125 (2008-09)
Comparison technical specifications
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| Make: | Aprilia | Aprilia |
| Model: | AF1 125 Sport Pro | SX 125 |
| Years: | 1992-93 | 2008-09 |
| Engine: | Two stroke, single cylinder light alloy and barrel with GILNISIL surface coating | Two stroke, single cylinder Aluminium cylinder with Nikasil coated liner. Read valve intake. Separate mixing. Homologated to Euro 3 standard. |
| Capacity: | 124.7 cc / 7.6 cu in | 125 cc / 7.6 cu-in |
| Bore x Stroke: | 54 x 54.5 mm | 54 x 54.5 mm |
| Compression Ratio: | 18:1 | 12.5:1 |
| Cooling System: | Liquid cooled | Liquid cooled |
| Induction: | Dell'Orto Ø 34 mm carburetor | DellOrto VHST 28 |
| Ignition: | Electronic | Electronic CDI |
| Starting: | Electric | Kick |
| Max Power: | 22.3 kW / 33 hp @ 11 000 rpm | 16.4 kW / 22 hp |
| Max Torque: | 19.6 Nm / 2.0 kgf-m / 14.5 lb-ft @ 10000 rpm | 16.0 Nm / 1.6 kgf-m / 11.8 ft-lb |
| Transmission: | 6 Speed | 6 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | Upside down fork, Ø 40 mm | Upside down telescopic fork, Ø40 mm |
| Front Wheel Travel: | 120 mm / 4.7 in | 260 mm / 10.2 in |
| Rear Suspension: | Aprilia Progressive System with hydraulic single shock-absorber | Steel swingarm. Hydraulic monoshock with piggy back cylinder |
| Rear Wheel Travel: | 120 mm / 4.7 in | 270 mm / 10.6 in |
| Front Brakes: | Single Ø 320 mm disc, 4 piston caliper | Single 260mm disc, sliding 2 piston caliper, Brembo |
| Rear Brakes: | Single Ø 240 mm disc, 2 piston caliper | Single 220mm disc, sliding 1 piston caliper |
| Front Tyre: | 100/80 -17 | 110/70 17 |
| Rear Tyre: | 140/70 -17 | 150/60 17 |
| Seat Height: | 800 mm / 31.5 in | 870 mm / 34.3 in |
| Dry Weight: | 114 kg / 251 lbs | 115 kg / 254 lbs |
| Fuel Capacity: | 14.5 Litres / 3.8 US gal | 10 liters / 2.6 US gal |
| Top Speed: | 174 km/h / 108 mph | 132 km/h / 82 mph |