Honda CBR 400F (1984) vs Aprilia RS4 125 GP Replica (2018)
Comparison technical specifications
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| Make: | Honda | Aprilia |
| Model: | CBR 400F | RS4 125 GP Replica |
| Years: | 1984 | 2018 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valve per cylinder. | Four stroke, single cylinder, DOHC, 4 valves |
| Capacity: | 399 cc / 24.3 cu-in | 124.8 cc / 7.6 cu in |
| Bore x Stroke: | 55 x 42 mm | 58 X 47 mm |
| Compression Ratio: | 9.6:1 | 12.5 ± 0.5:1 |
| Cooling System: | Air cooled | Liquid cooled |
| Induction: | VE53 carburetor | Magneti Marelli M3G ø 32mm ECU |
| Ignition: | CDI | Electronic with CDI capacity discharge |
| Starting: | Electric | Electric |
| Clutch: | Wet multi-plate coil spring | Multiple discs, in oil bath |
| Max Power: | 58 hp / 43.2 kW @ 12300 rpm | 11.7 kW / 16 hp @ 10500 rpm |
| Max Torque: | 3.6 kgf-m / 26.0 lb-ft @ 11000 rpm | 11 Nm / 1.12 kgf-m / 8.1 ft/lb @ 8500 rpm |
| Transmission: | 6 Speed | 6 Speed |
| Final Drive: | Chain | Chain: 60/13 (4.61) |
| Gear Ratio: | 1st 2.769 2nd 1.850 1.850 3rd 1.478 1.478 4th 1.240 1.240 5th 1.074 1.074 6th 0.965 0.965 | 1st 11/33 (0.33) 2nd 15/30 (0.50) 3rd 18/27 (0.67) 4th 20/24 (0.83) 5th 25/27 (0.92) 6th 23/22 (1.05) |
| Front Suspension: | Telescopic forks | Ø41 mm Upside down fork |
| Rear Suspension: | Swinging arm | Asymmetric swingarm with monoshock |
| Front Brakes: | 2x discs | Single 300 mm disc, 4 piston caliper |
| Rear Brakes: | Single disc | Single 218 mm disc, 1 piston caliper |
| Front Tyre: | 100/90 -16 | 110/80 17 |
| Rear Tyre: | 100/90 -18 | 130/70 17 |
| Seat Height: | 790 mm / 31.1 in | 820 mm / 32.3 in |
| Dry Weight: | 174 kg / 383.6 lbs | 122 kg / 269 lbs |
| Fuel Capacity: | 18 Litres / 4.7 US gal | 14.5 Litres / 3.8 US gal |