Yamaha XJ 400Z-E (1983) vs Yamaha RD 350LC / RZ 350LC YPVS (1983) vs Yamaha XVZ 1300 Royal Star Venture (2007-08) vs Yamaha XS 400 (1977-78)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha | Yamaha |
| Model: | XJ 400Z-E | RD 350LC / RZ 350LC YPVS | XVZ 1300 Royal Star Venture | XS 400 |
| Years: | 1983 | 1983 | 2007-08 | 1977-78 |
| Engine: | Four stroke, transverse four cylinder, DOHC, four valve per cylinder | Two stroke, parallel twin cylinder | Four stroke, 70°V-four cylinder, DOHC, 4 valve per cylinder | Four stroke, 180° parallel twin, SOHC, 2 valves per cylinder |
| Capacity: | 399 cc | 347 cc / 21.1 cu-in | 1294 cc / 78.9 cu-in | 392 cc / 23.9 cu-in |
| Bore x Stroke: | 54 х 53.6 mm | 64 х 54 mm | 79 х 66 mm | 69.0 x 52.4 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled | Air cooled |
| Compression Ratio: | 10.5:1 | 6.2 :1 | 10.0:1 | 9.2:1 |
| Induction: | Carburator | 2x 26mm Mikuni slide-needle carburetor | 4x 32mm Mikuni Constant-Velocity | 2x Mikuni BS32 carburetors |
| Ignition: | Transistorized CDI | Flywheel magneto CDI | Digital TCI | Battery ignition - With contact breaker points |
| Starting: | Electric | Kick | Electric | Electric & kick |
| Max Power: | 55 hp / 41kW @ 11500 rpm | 59 hp / 43.9 kW @ 9000 rpm | 98 hp / 71.5 kW @ 4750 rpm | 36 hp / 26.8 kW @ 8100 rpm |
| Max Torque: | 3.5 kgf-m / 25.3 lb-ft @ 10000 rpm | 40.2 Nm / 4.1 kgf-m / @ 8000 rpm | 123 Nm / 90.7 lb-ft @ 4750 rpm | 3.3 kgf-m / 23.8 lb-ft @ 8000 rpm |
| Transmission: | 6 speed | 6 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Shaft | Chain |
| Front Suspension: | Telescopic forks | 32mm stanchion tube forks | Air assisted telescopic fork | Telescopic fork |
| Rear Suspension: | Monocross, link type | Single shock cantilever 5-way adjustable spring preload | Single shock, link-type w/air assist | Dual shocks swing arm, preload adjustable |
| Front Brakes: | 2x discs | 2x 267mm disc 1 piston caliper | 2x 298mm discs 4 piston calipers | Single disc |
| Rear Brakes: | Single disc | Drum | Single 320mm disc 1 piston caliper | Drum |
| Front Tyre: | 90/90-18 | 3.00-18 | 150/80-16 | 3.00-18 |
| Rear Tyre: | 110/90-18 | 3.50-18 | 150/90-15 | 3.50-18 |
| Wheelbase: | 1420 mm / 55.9 in | 1365 mm / 53.7 in | 1705 mm / 67.1 in | 1364 mm / 53.7 in |
| Fuel Capacity: | 19 Litres / 5.0 US gal | 16.5 Liters / 4.3 US gal | 22.5 Litres / 5.9 US gal | 14 Litres / 3.7 US gal |