Kawasaki ZX-R 750-J (1992) vs Aprilia AF1 125 Project 108 Sport (1988) vs Honda CRF 230L (2006-07) vs Triumph Rocket III Roadster (2017-18)
Comparison technical specifications
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| Make: | Kawasaki | Aprilia | Honda | Triumph |
| Model: | ZX-R 750-J | AF1 125 Project 108 Sport | CRF 230L | Rocket III Roadster |
| Years: | 1992 | 1988 | 2006-07 | 2017-18 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Two stroke, single cylinder | Four stroke single cylinder, SOHC, 4 valves | Four stroke, 3-cylinder, DOHC |
| Capacity: | 749 cc / 45.7 cu-in | 123 cc / 7.5 cu in | 223 cc / 13.6 cu-in | 2294 cc / 140 cub in |
| Bore x Stroke: | 71 x 47.3 mm | 54 x 54.5 mm | 65.5 x 66.2mm | 101.6 x 94.3 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled | Liquid cooled |
| Compression Ratio: | 10.8:1 | 15.5:1 | 9.0:1 | 8.7:1 |
| Induction: | 4x 38 mm Keihin CVKD (Constant Velocity) carburettors / Ram Air System (single intake) | Dell'Orto carburetor, Ø 28 mm | Single 30 mm CV carburetor | Multipoint sequential electronic fuel injection with twin butterflies and progressive linkage on primary butterflies |
| Starting: | Electric | Electric | Electric & Kick | Electric |
| Max Power: | 100 hp / 74 kW @ 10500 rpm | 18.7 kW / 25.1 hp @10000 rpm | 18.6 hp / 13.7 kW @ 8000 rpm | 109 kW / 146 hp @ 5750 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 | 18.8 Nm / 1.92 kg-m @ 6000 rpm | 221 Nm / 22.5 kgf-m / 163 ft-lb @ 3300 rpm |
| Transmission: | 6 Speed | 6 Speed | 6 Speed | 5 Speed |
| Final Drive: | Chain | Chain | #520 O-ring-sealed chain | Shaft |
| Front Suspension: | 43mm Upside-down forks, adjustable ride height, 13-way rebound | Telescopic fork, 4-way anti-drive adjustable | 37mm leading-axle Showa fork | Kayaba 43mm upside down forks |
| Rear Suspension: | Uni Track monoshock. adjustable ride height, preload, 4-way rebound | Sebac mono shock | Pro-Link Showa single-shock with spring-preload adjustability | Kayaba black spring twin shocks with 5 position adjustable preload |
| Front Brakes: | 2x 320mm discs 4 piston calipers | Single Ø 260 mm disc | Single 240mm disc 2 piston caliper | 2 x 320 mm Floating discs, Nissin 4-piston fixed caliper, ABS |
| Rear Brakes: | Single 230mm disc 2 piston caliper | Single Ø 240mm disc | Single 220mm disc | Single 316 mm disc, Brembo 2 piston floating caliper, ABS |
| Front Tyre: | 120/70ZR17 /Std Pressure 36psi | 100/80-16 | 2.75-21 | 150/80 V17 |
| Rear Tyre: | 180/55ZR17 /Std Pressure 41psi | 120/80-16 | 120/80-18 | 250/50 V16 |
| Dry Weight: | 195 kg / 420.9 lbs | 120 kg / 265 lbs | 113 kg / 249 lbs | 320 kg / 704 lbs |
| Fuel Capacity: | 18 Litres / 4.7 US gal | 22.5 L / 5.9 US gal | 8.6 Litres / 2.27 gal | 24 Litres / 6.3 US gal |