Yamaha XJ 650 Maxim (1982) vs Yamaha XS 400L Maxim (1982-) vs Yamaha DT 125MX (1982) vs Yamaha RD 250LC / RZ 250LC (1982-83) vs Yamaha XZ 400D (1982-8)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha | Yamaha | Yamaha |
| Model: | XJ 650 Maxim | XS 400L Maxim | DT 125MX | RD 250LC / RZ 250LC | XZ 400D |
| Years: | 1982 | 1982- | 1982 | 1982-83 | 1982-8 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder, | Four stroke, parallel twin, DOHC, 2 valves per cylinder | Two stroke, single cylinder, reed-valve | Two stroke, parallel twin | Four stroke, 70°V-twin cylinder. DOHC, 4 valve per cylinder |
| Capacity: | 653 cc / 39.8 cu-in | 399 cc / 24.3 cu-in | 123 cc / 7.5 cu-in | 247 cc / 15.0 cu-in | 398 cc / 24.2 cu-in |
| Bore x Stroke: | 63 х 52.4 mm | 69.0 x 53.4 mm | 56 х 50 mm | 54 х 54 mm | 73 х 47.6 mm |
| Cooling System: | Air-cooled | Air cooled | Air cooled | Liquid cooled | Liquid cooled |
| Compression Ratio: | 9.2:1 | 9.7:1 | 7.2:1 | 6.2 :1 | 10.5:1 |
| Induction: | 4x 32mm Hitachi carburetors | 2x 32mm Mikuni carburetors | Single 24 mm Mikuni | 2x Mikuni VM28 SC carburetor | 2x Mikuni carburetors |
| Ignition: | Transistorized | Transistorized | Flywheel Magneto | CDI | Battery powered inductive |
| Starting: | Electric | Electric | Kick | Kick | Electric |
| Max Power: | 71 hp / 51.8 kW @ 9400 rpm | 45.5 hp / 34 kW @ 9500 rpm | 14 hp / 10.3 kW @ 6500 rpm | 35.5 hp / 26.1 kW @ 8500 rpm　 | 45 hp / 33.5 kW @ 9000 rpm |
| Max Torque: | 57 Nm / 42 lb-ft @ 7500 rpm | 3.5 kgf-m / 25.3 lb-ft @ 8000 rpm | 1.5 kgf-m / 15.2 Nm @ 6500 rpm | 30.2 Nm / 3.1 kgf-m@ 8000 rpm | 3.4 kgf-m / 27.5 lb-ft @ 9000 rpm |
| Transmission: | 5 Speed | 6 Speed | 6 speed | 6 Speed | 5 Speed |
| Final Drive: | Shaft | Chain | Chain | Chain | Shaft |
| Front Suspension: | 26mm Air assisted telescopic forks | Hydraulic telescopic forks | Telescopic Forks | Telescopic forks | Telescopic oil damped forks |
| Rear Suspension: | Duel Kayaba shocks, 5-way adjustable spring preload | Monocross system with single coil sprung, gas/oil damped shock, pre-load adjustable | Monocross | Monocross | Gas filled monoshock, 2-way adjustable. |
| Front Brakes: | Single 300mm disc | Single 10.5 in disc | Drum | Single 267mm disc | 2x 266mm discs |
| Rear Brakes: | Drum | Drum | Drum | Drum | Single 177mm drum |
| Front Tyre: | 3.25 H19 | 3.00-18 | 2.75-21 | 3.00-18 | 100/90-18 |
| Rear Tyre: | 130/90 H16 | 4.10-18 | 3.50-18 | 3.50-18 | 110/90-18 |
| Dry Weight: | 203 kg / 450 lbs | kg / 366 lbs | 96 kg / 212 lbs | 139 kg / 306.4 lbs | 188 kg / 414.4 lbs |
| Fuel Capacity: | 13 Litres / 3.4 US gal | 17 Litres / 4.4 US gal | 7 Litres / 1.58 gal | 16.5 Litres / 4.3 US gal | 17 Litres / 4.4 US gal |