Yamaha FZ-6S2 Fazer (2009) vs Aprilia RX 125 (1983-84) vs Aprilia RX 125 (2010-13)
Comparison technical specifications
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| Make: | Yamaha | Aprilia | Aprilia |
| Model: | FZ-6S2 Fazer | RX 125 | RX 125 |
| Years: | 2009 | 1983-84 | 2010-13 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Single cylinder, two stroke | Single cylinder two stroke. Aluminium cylinder with Nikasil coated liner. Read valve intake. Separate mixing. Homologated to Euro 3 standard. |
| Capacity: | 599 cc / 36.5 cu-in | 124.8 cc / 7.6 cu in | 124.8 cc / 7.6 cu in |
| Bore x Stroke: | 65.5 x 44.5 mm | 54 x 54.5 mm | 54 x 54.5 mm |
| Compression Ratio: | 12.2:1 | 11.5:1 | 12.5:1 |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled |
| Starting: | Electric | Electric and kick | Electric and kick |
| Transmission: | 6 Speed | 6 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain |
| Front Suspension: | 43mm Telescopic fork, | Hydraulic telescopic fork | Upside down telescopic fork, Ø 40 mm. |
| Rear Suspension: | Swingarm Link less type Monocross | Swingarm with single shock absorber | Steel swingarm. Hydraulic monoshock with piggy back cylinder. |
| Front Brakes: | 2x 298 mm discs | Drum | Single Ø 260 mm disc. 2 piston caliper |
| Rear Brakes: | Single 245 mm disc | Drum | Single Ø 220 mm disc, 1 piston caliper |
| Front Tyre: | 120/70 ZR17 | 3.00-21 | 90/90-21 |
| Rear Tyre: | 180/55 ZR17 | 4.00-18 | 120/90 18 |
| Dry Weight: | 186 kg / 410 lbs - ABS 191 kg / 421 lbs | 91 kg / 201 lbs | 116 kg / 256 lbs |
| Fuel Capacity: | 19 Litres / 5.0 US gal | 8.5 L / 2.2 US gal | 10 liters / 2.6 US gal |