Derbi Senda R 125 4T (1999-03) vs Yamaha FZ 400N (1984) vs Yamaha VMX V-Max 1.7 (2020) vs Derbi GPR 125 Nude (2005-) vs LIFAN Lifan LF200 GY-5 (2006-08) vs Buell / EBR Buell XB12Ss Lightning Long (2010)
Comparison technical specifications
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| Make: | Derbi | Yamaha | Yamaha | Derbi | LIFAN | Buell / EBR |
| Model: | Senda R 125 4T | FZ 400N | VMX V-Max 1.7 | GPR 125 Nude | Lifan LF200 GY-5 | Buell XB12Ss Lightning Long |
| Years: | 1999-03 | 1984 | 2020 | 2005- | 2006-08 | 2010 |
| Engine: | Four stroke, single cylinder. OHC | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, V-four, DOHC, 4 valve per cylinder. | Two stroke, single cylinder | Four stroke, single cylinder | 45° V-Twin, four stroke, pushrod actuated overhead valve. hydraulic self-adjusting lifters, 2 valve per cylinder. |
| Capacity: | 124 cc / 7.6 cu-in | 399 cc / 24.3 cu-in | 1679 cc / 102.4 cu-in | 124.7 cc / 7.6 cu-in | 196.9 cc / 12.01 cub in. | 1203 cc / 73 cu in |
| Bore x Stroke: | 56 x 49 mm | 54 x 43.6 mm | 90 x 66 mm | 56 x 50 mm | 63.5 x 62.2 | 88.9 x 96.8 mm |
| Cooling System: | Air cooled | Liquid cooled | Liquid cooled | Liquid cooled | Air cooled | Air cooled |
| Compression Ratio: | 11.0:1 | 11.5:1 | 11.3:1 | 12.5:1 | 9.0:1 | 10.0:1 |
| Induction: | 22mm Keihin | 4x Mikuni BDST32 carburetor | Mikuni 48mm fuel injection | 28mm Mikuni | Carburetor | Ø49 mm downdraft DDFI II fuel injection |
| Starting: | Electric | Electric | Electric | Electric | Electric & Kick | Electric |
| Max Power: | 9 kW / 12 hp @ 6500 rpm | 50 hp @ 11500 rpm ) | 147.2 kW / 200 hp @ 9000 rpm | 11 kW 15 hp @ 8250 rpm | 10.2 kW / 13.9 hp @ 8000 rpm | 86.9 kW / 103 hp @ 6800 rpm |
| Max Torque: | 9 Nm / 6.6 lb-ft @ 6500 rpm | 3.7 kgf-m @ 10000 rpm | 166.8 Nm / 17.0 kgf-m @ 6500 rpm | 13.5 Nm @ 77500 rpm | 13.8 Nm / 1.4 kgf-m / 10.2 ft/lb @ 6000 rpm | 114 Nm / 11.6 kgf-m / 84 ft-lbs @ 6000 rpm |
| Transmission: | 5 Speed | 6 Speed | 5 Speed with slipper clutch | 6 Speed | 5-Speed | 5 Speed |
| Final Drive: | Chain | Chain | Shaft | Chain | Chain | Belt |
| Front Suspension: | 41mm Paoli forks | Telescopic forks | 52mm Telescopic forks | Inverted fork. 120mm wheel travel | Telescopic fork | Showa Ø43 mm inverted forks compression damping, rebound damping and spring preload adjustable |
| Rear Suspension: | Paoli monoshock | Monoshock | Swingarm Link-type suspension | Monoshock 110mm wheel travel | Swinging arm | Showa coil-over monoshock, remote underseat reservoir and adjustable compression damping, rebound damping and spring preload, |
| Front Brakes: | Single 260mm disc | 2x 282mm discs | 2x 320mm discs | Single 300mm disc 4 piston caliper | Single disc | ZTL type brake, 6 piston, fixed caliper, Ø375 mm single-sided, inside out, stainless steel, floating rotor |
| Rear Brakes: | Single 220mm disc | Single 210mm disc | Single 280mm disc | Single 180mm disc 2 piston caliper | Single disc | Single Ø240 mm disc, 1 piston floating caliper |
| Fuel Capacity: | 7.5 Litres / 2.0 US gal | 18 Litres / 4.75 gal | 15 Litres / 4.0 US gal | 13 Litres / 3.4 US gal | 10.5 L / 2.7 US gal | 16.7 L / 4.4 US gal |