Aprilia ETX 125 (1988-96) vs Aprilia RS 125 R (2007-08)
Comparison technical specifications
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| Make: | Aprilia | Aprilia |
| Model: | ETX 125 | RS 125 R |
| Years: | 1988-96 | 2007-08 |
| Engine: | Two stroke single cylinder | Single cylinder, two stroke, reed valves induction |
| Capacity: | 123.6 cc / 7.54 cu in | 124.8 cc / 7.5 cu in |
| Bore x Stroke: | 54 x 54 mm | 54 x 54.5mm |
| Compression Ratio: | 15.5:1 | 12.5:1 |
| Cooling System: | Liquid cooled | Liquid cooled |
| Transmission: | 6 Speed | 6 Speed |
| Final Drive: | Chain | 17:40 |
| Frame: | Single steel beam cradle | Cast aluminium, reinforced box section, sloping twin-spar frame |
| Front Suspension: | Hydraulic telescopic front fork, Marzocchi Ø35 mm | Upside-down forks, Ø 40mm |
| Rear Suspension: | Swingarm with single shock absorber | Monoshock, cast aluminium box section swingarm with asymmetric members |
| Front Brakes: | Single disc, Ø230 mm | Single 320 mm floating discs, 4 piston radial caliper |
| Rear Brakes: | Drum, Ø125 mm | Single 220 mm disc, 2 piston caliper |
| Front Tyre: | 2.75-21 | 110/70-17 |
| Rear Tyre: | 4.00-18 | 150/60-17 |
| Dry Weight: | 113 kg / 249 lbs | 115 kg / 254 lbs |
| Fuel Capacity: | 10 Litres / 2.6 US gal | 14 L / 3.7 US gal |
| Top Speed: | 121.5 km/h / 75.5 mph | 155 km/h / 96 mph |