Aprilia RS 125 R (2010) vs KTM 250 EXC-F (2017)
Comparison technical specifications
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| Make: | Aprilia | KTM |
| Model: | RS 125 R | 250 EXC-F |
| Years: | 2010 | 2017 |
| Engine: | Single cylinder, two stroke, reed valves induction, aluminium cylinder with Nikasil coated liner | Four stroke, single cylinder, DOHC with finger followers, 4 valves |
| Capacity: | 124.8 cc / 7.5 cu in | 249 cc / 15.2 cu-in |
| Bore x Stroke: | 54 x 54.5mm | 78 x 52.3 mm |
| Compression Ratio: | 12.5:1 | 13.2:1 |
| Cooling System: | Liquid cooled | Liquid cooled |
| Lubrication: | Separate mixing, volumetric pump | Forced oil lubrication with 2 Eaton pumps |
| Induction: | Dell'Orto PHBH 28 carburetor | Fuel Injection |
| Ignition: | CDI electronic ignition | Keihin EMS |
| Starting: | Electric | Electric |
| Clutch: | Wet, multi-disc | Wet, DDS multi-disc clutch, Brembo hydraulics |
| Transmission: | 6 Speed | 6 Speed |
| Final Drive: | 17:40 | Chain, 5/8 x 1/4 in |
| Frame: | Cast aluminium, reinforced box section, sloping twin-spar frame | Central tube frame made of chrome molybdenum steel tubing |
| Front Suspension: | Upside-down forks, Ø 40mm | 48mm WP-USD Xplor with preload adjuster |
| Front Wheel Travel: | 120 mm / 4.7 in | 300 mm / 11.8 in |
| Rear Suspension: | Monoshock, cast aluminium box section swingarm with asymmetric members | WP Xplor PDS shock absorber |
| Rear Wheel Travel: | 120 mm / 4.7 in | 310 mm / 12.2 in |
| Front Brakes: | Single 320 mm floating discs, 4 piston radial caliper | Single 260 mm disc, 2 piston caliper |
| Rear Brakes: | Single 220 mm disc, 2 piston caliper | Single 220 mm disc, 1 piston caliper |
| Front Tyre: | 110/70-17 | 90/90 - 21 M/C 54M M+S TT |
| Rear Tyre: | 150/60-17 | 120/80 - 18 M/C 65M M+S TT |
| Wheelbase: | 1345 mm / 53.0 in | 1482 mm / 58.3 in |
| Seat Height: | 805 mm / 31.7 in | 960 mm / 37.8 in |
| Dry Weight: | 127 kg / 280 lbs | 103kg / 227.1 lbs |
| Fuel Capacity: | 14 Litres / 3.7 US gal | 8.5 Litres / 2.25 US gal |