Suzuki GSX-R 750 K3 (2003) vs Gilera KZ 125 (1988-89) vs Yamaha FJR 1300A / AE / AS (ES in USA) (2017)
Comparison technical specifications
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| Make: | Suzuki | Gilera | Yamaha |
| Model: | GSX-R 750 K3 | KZ 125 | FJR 1300A / AE / AS (ES in USA) |
| Years: | 2003 | 1988-89 | 2017 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Two stroke, single cylinder, reed valve | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. |
| Capacity: | 749 c / 45.7 cub. in. | 124 ccc / 7.6 cu-in | 1298 cc / 79.2 cu-in |
| Bore x Stroke: | 72 x 46 mm | 56 x 50.5 mm | 79 x 66.2 mm |
| Compression Ratio: | 12.0:1 | 13.0;1 | 10.8:1 |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled |
| Induction: | Fuel injection, 46 mm throttle bodies | 28 Dell'Orto PHBH carburetors | Yamaha Electronic Fuel Injection with YCC-T |
| Ignition: | Digital DC-CDI | CDI | TCI: Transistor Controlled Ignition |
| Starting: | Electric | Electric | Electric |
| Max Power: | 102.9 kW / 140 hp @ 12500 rpm | 29.3 hp / 21.8 kW @ 9900 rpm | 105.7 kW / 146.2 hp @ 8000 rpm |
| Max Torque: | 85 Nm / 8.7 kgf-m / 62.7 ft-lb @ 10500 rpm | 18 Nm / 13.2 lb-ft @ 10250 rpm | 138 Nm / 14,1kgf-m / 101.8 lb-ft @ 7000 rpm |
| Clutch: | Wet, multiple discs | Multi-disc oil bath | Wet, multiple discs, hydraulic operated A/ES: Assist -and-Slipper clutch AS: Electronic clutch-less gearshift system |
| Transmission: | 6 Speed, constant mesh | 6 Speed | 6 Speed |
| Final Drive: | #525 Chain, O-ring sealed, 108 links | Chain | Shaft |
| Frame: | Conventional twin-beam aluminium construction | Diagonal double cradle tubular steel | Aluminium, diamond shaped |
| Front Suspension: | Inverted telescopic, coil spring, fully adjustable spring preload, rebound and compression damping | Fork traditional 36mm. Antidive adjustable | 48mm Upside-down telescopic fork with adjustable preload, compression and rebound damping (AE/AS/ES: Suspension electronically adjustable) |
| Rear Suspension: | Link-type, gas/oil damped, fully adjustable spring preload and compression damping, 4-way adjustable rebound damping | Hydraulic shock absorber adjustable in spring preload Court Cosso | Single shock, link-type, with adjustable preload and rebound damping (AE/AS/ES: Suspension electronically adjustable) |
| Front Brakes: | 2 x 320 mm Discs, 4 piston calipers | Single 240mm disc 2 piston caliper | 2 x 320mm discs, 4 piston calipers, unified brake system, ABS |
| Rear Brakes: | Single 220 mm disc, 2 piston caliper | Single 240mm disc | Single 282 mm disc, 2 piston caliper, unified brake system, ABS |
| Front Tyre: | 120/70 ZR17 | 100/80-16 | 120/70 ZR17 |
| Rear Tyre: | 180/55 ZR17 | 120/80-16 | 180/55 ZR17 |
| Seat Height: | 830 mm / 32.7 in. | 760 mm / 29.9 in | 805 mm - 825.5 mm / 31.7 in - 32.5 in. |
| Fuel Capacity: | 18 Litres / 4.8 US gal / 4.0 Imp gal | 25 Litres / 6.6 gal |