Kawasaki ZX-R 750-J (1992) vs Aprilia AF1 125 Project 108 Sport (1988)
Comparison technical specifications
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| Make: | Kawasaki | Aprilia |
| Model: | ZX-R 750-J | AF1 125 Project 108 Sport |
| Years: | 1992 | 1988 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Two stroke, single cylinder |
| Capacity: | 749 cc / 45.7 cu-in | 123 cc / 7.5 cu in |
| Bore x Stroke: | 71 x 47.3 mm | 54 x 54.5 mm |
| Cooling System: | Liquid cooled | Liquid cooled |
| Compression Ratio: | 10.8:1 | 15.5:1 |
| Induction: | 4x 38 mm Keihin CVKD (Constant Velocity) carburettors / Ram Air System (single intake) | Dell'Orto carburetor, Ø 28 mm |
| Starting: | Electric | Electric |
| Max Power: | 100 hp / 74 kW @ 10500 rpm | 18.7 kW / 25.1 hp @10000 rpm |
| Max Torque: | 7.45 kgf-m / 58.3 lb-ft @ 9000rpm | 17.7 Nm / 1.8 kgf-m / 13.1 lb-ft @ 8000 rpm |
| Transmission: | 6 Speed | 6 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | 43mm Upside-down forks, adjustable ride height, 13-way rebound | Telescopic fork, 4-way anti-drive adjustable |
| Rear Suspension: | Uni Track monoshock. adjustable ride height, preload, 4-way rebound | Sebac mono shock |
| Front Brakes: | 2x 320mm discs 4 piston calipers | Single Ø 260 mm disc |
| Rear Brakes: | Single 230mm disc 2 piston caliper | Single Ø 240mm disc |
| Front Tyre: | 120/70ZR17 /Std Pressure 36psi | 100/80-16 |
| Rear Tyre: | 180/55ZR17 /Std Pressure 41psi | 120/80-16 |
| Dry Weight: | 195 kg / 420.9 lbs | 120 kg / 265 lbs |
| Wet Weight: | 221.6 kg / 487.2 lbs | 134.6 kg / 297 lbs |
| Fuel Capacity: | 18 Litres / 4.7 US gal | 22.5 L / 5.9 US gal |
| Consumption average: | 16.3 km/l | 4.4 L/100 km / 22.7 km/l / 53 US mpg |
| Top Speed: | 241 km/h / 149.7 mph | 156.6 km/h / 97.3 mph |