Aprilia RSV-4 Factory (2009) vs Aprilia RS 125 R (2009) vs Aprilia ETX 125 (1984-85)
Comparison technical specifications
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| Make: | Aprilia | Aprilia | Aprilia |
| Model: | RSV-4 Factory | RS 125 R | ETX 125 |
| Years: | 2009 | 2009 | 1984-85 |
| Engine: | Four stroke, longitudinal 65° V four , DOHC, 4 valves per cylinder | Single cylinder, two stroke, reed valves induction, aluminium cylinder with Nikasil coated liner | Two stroke single cylinder |
| Capacity: | 998.9 cc / 61 cu in | 124.8 cc / 7.5 cu in | 123.6 cc / 7.54 cu in |
| Bore x Stroke: | 78 x 52.3 mm | 54 x 54.5mm | 54 x 54 mm |
| Compression Ratio: | 12.8:1 | 12.5:1 | 15.5:1 |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled |
| Transmission: | 6 Speed | 6 Speed | 6 Speed |
| Final drive: | Chain: Drive ratio: 40/16 (2,5) | 17:40 | Chain |
| Frame: | Twin beam aluminium frame with mixed cast and pressed sheet sections. Adjustments for headstock position and angle, engine height, swingarm pivot height. | Cast aluminium, reinforced box section, sloping twin-spar frame | Single steel beam cradle |
| Front Suspension: | Öhlins Ø43 mm upside-down fork. Lower fork bottoms for radial calipers. Adjustment for preload, compression and rebound. | Upside-down forks, Ø 40mm | Hydraulic telescopic front fork, Marzocchi Ø35 mm |
| Rear Suspension: | Double arch aluminium swingarm; mixed thin-wall casting and pressed sheet construction. Öhlins monoshock with piggy-back cylinder. Adjustments for compression, rebound, spring preload and length. APS rising rate linkages. | Monoshock, cast aluminium box section swingarm with asymmetric members | Swingarm with single shock absorber |
| Front Brakes: | 2 x Ø320 mm lightweight stainless steel floating discs, Brembo monobloc radial calipers with 4 opposed pistons. Sintered pads. Radial master cylinder. Metal braided brake line. | Single 320 mm floating discs, 4 piston radial caliper | Single disc, Ø230 mm |
| Rear Brakes: | Single Ø220 mm disc. Brembo floating caliper with 2 insulated pistons. Sintered pads. Master cylinder with integral reservoir. Metal braided brake line. | Single 220 mm disc, 2 piston caliper | Drum, Ø125 mm |
| Front Tyre: | 120/70 ZR17 | 110/70-17 | 2.75-21 |
| Rear Tyre: | 190/55 ZR17 | 150/60-17 | 4.00-18 |
| Dry Weight: | 179 Kg / 395 lbs | 127 kg / 280 lbs | 113 kg / 249 lbs |
| Top Speed: | 289.9 km/h / 180.14 mph | 155 km/h / 96 mph | 121.5 km/h / 75.5 mph |