Aprilia AF1 125 Project 108 Sport (1988) vs Aprilia RS 125 R Valentino Rossi Replica (1999-00) vs Aprilia RS 125 R (2007-08)
Comparison technical specifications
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| Make: | Aprilia | Aprilia | Aprilia |
| Model: | AF1 125 Project 108 Sport | RS 125 R Valentino Rossi Replica | RS 125 R |
| Years: | 1988 | 1999-00 | 2007-08 |
| Engine: | Two stroke, single cylinder | Single cylinder, two stroke, reed valves induction | Single cylinder, two stroke, reed valves induction |
| Capacity: | 123 cc / 7.5 cu in | 125 cc / 7.6 cu in | 124.8 cc / 7.5 cu in |
| Bore x Stroke: | 54 x 54.5 mm | 54 x 54.5mm | 54 x 54.5mm |
| Compression Ratio: | 15.5:1 | 14.5:1 | 12.5:1 |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled |
| Induction: | Dell'Orto carburetor, Ø 28 mm | Dell'Orto VHSB 34LD | Dell'Orto PHBH 28 carburetor |
| Starting: | Electric | Electric | Electric |
| Max Power: | 18.7 kW / 25.1 hp @10000 rpm | 24.8 kW / 34 hp @ 11000 rpm | 21 kW / 28 hp @ 10500 rpm |
| Max Torque: | 17.7 Nm / 1.8 kgf-m / 13.1 lb-ft @ 8000 rpm | 25 Nm / 2.5 kgf-m / 18.4 lb-ft @ 9000 rpm | 19 Nm / 1.9 kgf-m / 14.1 lb-ft @ 9000 rpm |
| Transmission: | 6 Speed | 6 Speed | 6 Speed |
| Final Drive: | Chain | Chain | 17:40 |
| Front Suspension: | Telescopic fork, 4-way anti-drive adjustable | Upside-down forks, Ø 40mm | Upside-down forks, Ø 40mm |
| Rear Suspension: | Sebac mono shock | Monoshock | Monoshock, cast aluminium box section swingarm with asymmetric members |
| Front Brakes: | Single Ø 260 mm disc | Single 320 mm discs, 4 piston caliper | Single 320 mm floating discs, 4 piston radial caliper |
| Rear Brakes: | Single Ø 240mm disc | Single 240 mm disc, 2 piston caliper | Single 220 mm disc, 2 piston caliper |
| Front Tyre: | 100/80-16 | 110/70-17 | 110/70-17 |
| Rear Tyre: | 120/80-16 | 150/60-17 | 150/60-17 |
| Dry Weight: | 120 kg / 265 lbs | 115 kg / 254 lbs | 115 kg / 254 lbs |
| Wet Weight: | 134.6 kg / 297 lbs | 142 kg / 313 lbs | 142 kg / 313 lbs |
| Fuel Capacity: | 22.5 L / 5.9 US gal | 11.5 Litres / 3.0 US gal | 14 L / 3.7 US gal |
| Top Speed: | 156.6 km/h / 97.3 mph | 171.3 km/h / 106 mph | 155 km/h / 96 mph |