Aprilia RX 125 Six Days ModelM (1991-92) vs Aprilia RX 125R (1998-00)
Comparison technical specifications
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| Make: | Aprilia | Aprilia |
| Model: | RX 125 Six Days ModelM | RX 125R |
| Years: | 1991-92 | 1998-00 |
| Engine: | Single cylinder, two stroke, Rotax 123 with Gilardoni 2 cylinder/head | Single cylinder, two stroke |
| Capacity: | 124.8 cc / 7.6 cu in | 124.8 cc / 7.6 cu in |
| Bore x Stroke: | 54 x 54.5 mm | 54 x 54.5 mm |
| Compression Ratio: | 11.5:1 | 12.5:1 |
| Induction: | VHSB34 LD carburetor | Dell'Orto Ø 34 mm carburetor |
| Starting: | Kick | Electric and kick |
| Max Power: | 25.7 kW / 34.5 hp @ 10800 rpm | 23.1 kW / 31.0 hp @ 10800 rpm |
| Max Torque: | 20.6 Nm / 2.1 kgf-m / 15.2 lb-ft @ 10500 rpm | 21.6 Nm / 2.2 kgf-m / 15.9 lb-ft @ 10500 rpm |
| Transmission: | 6 Speed | 6 Speed |
| Final Drive: | #520 Chain, 12T to 17T pinion gear, 49T spur gear | Chain |
| Front Suspension: | Marzocchi upside down fork | Upside down fork |
| Rear Suspension: | Swingarm with single shock absorber, Aprilia Progressive System with fully adjustable Boge Sachs shock absorber | Swinging fork swingarm with single shock absorber |
| Front Brakes: | Single disc, 250 mm | Single Ø 250 mm disc |
| Rear Brakes: | Single disc, 220 mm | Single Ø 220mm disc |
| Front Tyre: | 90/90-21 | 90/90-21 |
| Rear Tyre: | 120/90-18 | 120/80-19 |
| Wet Weight: | 110 kg / 243 lbs | 122 kg / 269 lbs |
| Fuel Capacity: | 9 L / 2.4 US gal / 2.0 Imp gal | 11.5 L / 3.o US gal |
| Consumption Average: | 5.5 L/100 km / 18.2 km/l / 42.8 US mpg / 51.4 Imp mpg | 6.7 L/100 km / 15.0 km/l / 36 USmpg |
| Braking 60 km/h / 32 mph - 0: | 14.8 m / 48.6 ft | 14.3 m / 46.9 ft |
| Braking 100 km/h / 67 mph - 0: | 43.1 m / 141.4 ft | 42.9 m / 140.7 ft |
| Standing ¼ Mile: | 15.2 sec / 131.4 km/h / 81.6 mph | 14.9 sec / 127.0 km/h / 79 mph |
| Top Speed: | 132.2 km/h / 82.1 mph | 128.0 km/h / 79.5 mph |