Yamaha YZF-R 125 (2011) vs Aprilia RXV 550 (2006-07)
Comparison technical specifications
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| Make: | Yamaha | Aprilia |
| Model: | YZF-R 125 | RXV 550 |
| Years: | 2011 | 2006-07 |
| Engine: | Four stroke, single cylinder, SOHC, 4 valve | Four stroke, 77° V-twin cylinder |
| Capacity: | 124 cc / 7.6 cu-in | 549 cc / 33.5 cu in |
| Bore x Stroke: | 52 × 58.6 mm | 80 x 55 mm |
| Cooling System: | Liquid cooled | Liquid cooled |
| Compression Ratio: | 10.4:1 | 12.0:1 |
| Induction: | Fuel Injection | Integrated engine management system controlling ignition and fuel injection. Throttle body: Ø40 mm |
| Ignition: | TCI | Electronic |
| Starting: | Electric | Electric |
| Max Power: | 12.6 kW / 17 hp @ 8500 rpm | 52.2 kW / 70 hp @ 13000 rpm |
| Max Torque: | 15 Nm / 1.25 kg-m @ 7500 rpm | 65.9 Nm / 6.7 kgf-m / 48.6 lb-ft @ 10900 rpm |
| Transmission: | 6 Speed | 5 Speed |
| Final Drive: | Chain | Chain |
| Frame: | Delta box | Steel perimeter frame with alloy vertical members |
| Front Suspension: | Telescopic forks | Ø45 mm Upside down fork, double adjustment |
| Rear Suspension: | Swinging arm | Box section aluminium swingarm with cast body, Hydraulic monoshock with compression and rebound adjustment |
| Front Brakes: | Single 292mm disc | Single Ø270 mm disc, 4 piston caliper |
| Rear Brakes: | Single 230mm disc | Single Ø240 mm disc, 2 piston caliper |
| Front Tyre: | 90/80 -17 | 90/90 -21 |
| Rear Tyre: | 130/70 -17 | 140/80 -18 |
| Dry Weight: | 127 kg / 279 lbs | 129 kg / 284 lbs |
| Fuel Capacity: | 13.8 Litres / 3.6 gal | 7.8 Litres / 2.1 US gal |