Derbi GPR 125 (2007-10) vs Buell / EBR Buell XB12S Lightning (2006) vs KTM RC8R 1190 (2015) vs Aprilia SR Motard 125 (2012-14)
Comparison technical specifications
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| Make: | Derbi | Buell / EBR | KTM | Aprilia |
| Model: | GPR 125 | Buell XB12S Lightning | RC8R 1190 | SR Motard 125 |
| Years: | 2007-10 | 2006 | 2015 | 2012-14 |
| Engine: | Two stroke, single cylinder | 45° V-Twin, four stroke, pushrod actuated overhead valve. hydraulic self-adjusting lifters, 2 valve per cylinder. | Four stroke, 75°V-twin cylinder, DOHC, 4 valves per cylinder | Four stroke, single cylinder, SOHC, 4 valves |
| Capacity: | 124.7 cc / 7.6 cu-in | 1203 cc / 73 cu in | 1195 cc / 73.0 cu-in | 124 cc / 7.6 cu in |
| Bore x Stroke: | 56 x 50 mm | 88.9 x 96.8 mm | 105 x 69 mm | 57 x 48.6 mm |
| Cooling System: | Liquid cooled | Air cooled | Liquid cooling | Forced air |
| Induction: | 28mm Mikuni | Ø49 mm downdraft DDFI II fuel injection | Keihin EFI throttle body 52 mm | Electronic injection |
| Max Power: | 11 kW 15 hp @ 8250 rpm | 86.9 kW / 103 hp @ 6800 rpm | 129 kW / 175 hp @ 10250 rpm | 6.8 kW / 9.3 hp @ 8500 rpm |
| Max Torque: | 13.5 Nm @ 77500 rpm | 114 Nm / 11.6 kgf-m / 84 ft-lbs @ 6000 rpm | 127 Nm / 93.6 lb-ft @ 8000 rpm | 8.1 Nm / 0.83 kgf-m / 6.0 lb-ft @ 7500 rpm |
| Transmission: | 6 Speed | 5 Speed | 6 Speed claw shifted | Automatic continuously variable transmission (CVT) with torque server |
| Final Drive: | Chain | Belt | Chain 5/8 x 5/16" X Ring | Belt |
| Front Suspension: | 40mm Fourche USD hydraulic forks, 120mm wheel travel | Showa inverted forks compression damping, rebound damping and spring preload adjustable | 43mm WP Upside down adjustable | Hydraulic telescopic fork with straight stanchions |
| Rear Suspension: | Monoshock, 110mm wheel travel | Showa coil-over monoshock, remote underseat reservoir and adjustable compression damping, rebound damping and spring preload, 127mm wheel travel | WP shock, fully adjustable | Single arm with engine crankcase as swinging element, served by a single dual chamber shock with 4-setting adjustable spring preload |
| Front Brakes: | Single 300mm disc 4 piston caliper | ZTL type brake, 6 piston, fixed caliper, Ø375 mm single-sided, inside out, stainless steel, floating rotor | 2x 320mm discs 4 piston calipers | Single Ø220 mm disc, 2 x Ø25.4 mm dual piston floating caliper |
| Rear Brakes: | Single 180mm disc 2 piston caliper | Single Ø240 mm disc, 1 piston floating caliper | Single 240mm disc | Ø140 mm Drum |
| Front Tyre: | 110/70 -17 | 120/70 ZR17 | 120/70 ZR17 | 120/70 - 14 |
| Rear Tyre: | 140/70 -17 | 180/55 ZR17 | 190/55 ZR17 | 120/70 - 14 |
| Dry Weight: | 123 kg / 271 lbs | 179 kg / 395 lbs | 186.0 kg / 410.1 lbs | 122 kg / 269 lbs |
| Fuel Capacity: | 13 Litres / 3.4 US gal | 14 L / 3.7 US gal | 16.5 Litres / 4.3 gal | 7 liters / 1.8 US gal |