Yamaha XJ 600N (2001-04) vs Yamaha DT 125LC (1984) vs Yamaha SRX 600 (1987-88) vs Yamaha RD 350RR (1984)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha | Yamaha |
| Model: | XJ 600N | DT 125LC | SRX 600 | RD 350RR |
| Years: | 2001-04 | 1984 | 1987-88 | 1984 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder | Two stroke, single cylinder, reed-valve | Four stroke, single cylinder, SOHC, 4 valve | Two stroke, parallel twin cylinder, YPVS |
| Capacity: | 599 cc / 36.5 cu-in | 123 cc / 7.5 cu-in | 608 cc / 37.1 cu-in | 347 cc / 21.1 cu-in |
| Bore x Stroke: | 58.5 x 55.7 mm | 56 х 50 mm | 96 х 84 mm | 64 х 54 mm |
| Cooling System: | Air cooled | Liquid cooled | Air cooled | Liquid cooled |
| Compression Ratio: | 10:1 | 6.8:1 | 8.5:1 | 6.2 :1 |
| Induction: | 4x 28mm Mikuni BDS28 downdraft carburettors | Single 24 mm Mikuni VM26SS carburetor | 27mm Teikei 2KY27PV carburetor | 2x 26mm Mikuni slide-needle carburetor |
| Ignition: | Transistor | CDI | CDI | Flywheel magneto CDI |
| Starting: | Electric | Kick | Kick | Kick |
| Max Power: | 61 hp / 45 kW @ 8.500 rpm | 14 hp / 10.3 kW @ 6500 rpm | 45 hp / 34 kW @ 6500 rpm | 59 hp / 43.9 kW @ 9000 rpm |
| Max Torque: | 33.9 lb-ft / 4.7 kgf-m @ 7000 rpm | 1.5 kgf-m / 15.2 Nm @ 6500 rpm | 4.9 kgf-m / 34 lb-ft / 46 Nm @ 5500 rpm | 40.2 Nm / 4.1 kgf-m / @ 8000 rpm |
| Transmission: | 6 Speed | 6 speed | 5 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain | Chain |
| Front Suspension: | 38mm Telescopic forks, no adjustment | Telescopic Forks | 36mm Telescopic forks | 35mm Telescopic forks air assistance and variable damping |
| Rear Suspension: | Monocross monoshock adjustable for preload | Monocross | Dual Kayaba shocks 5-way adjustable for preload | Rising rate Monocross 5-way preload |
| Front Brakes: | 2x 298mm discs 2 piston calipers | Drum | 2x 267mm disc | 2x 260mm disc 2 piston calipers |
| Rear Brakes: | Single 245mm disc 2 piston caliper | Drum | Single 240mm disc | Single 260mm disc 1 piston caliper |
| Front Tyre: | 110/80H17 | 2.75-21 | 110/70-17 | 90/90-18 51H |
| Rear Tyre: | 130/70H18 | 4.10-18 | 150/60-17 | 110/80-18 58H |
| Dimensions: | Length 2170 mm / 85.4 in Width 770 mm / 30.3 in Height 1205 mm / 47.4 in | Length 2140 mm / 84.2 in Width 820 mm / 32.2 in Height 1170 mm / 46.0 in | Length 2049 mm / 80.6 in Width 740 mm / 29.1 in Height 1140 mm / 44.8 in | Length 2095 mm / 82.4 in Width 700 mm / 27.5 in Height 1190 mm / 46.8 in |
| Wheelbase: | 1445 mm / 56.8 in | 1360 mm / 53.5 in | 1380 mm / 54.3 in | 1385 mm / 54.5 in |
| Seat Height: | 770 mm / 30.3 in | 845 mm / 33.2 in | 770 mm / 20.3 in | 790 mm / 31.1 in |
| Ground Clearance: | 150 mm / 5.9 in | 285 mm / 11.0 in | 150 mm / 5.9 in | 165 mm / 6.4 in |
| Dry Weight: | 193 kg / 425 lbs | 99 kg / 218 lbs | 155 kg / 341.7 lbs | 141 kg / 310.8 lbs |
| Fuel Capacity: | 17 Litres / 4.4 US gal | 10 Litres / 2.2 gal | 15 Litres / 3.9 gal | 17 Litres / 4.5 US gal |
| Consumption Average: | 18.1 km/lit | 79 mpg | 20.2 km/lit | 43 mpg |
| Standing ¼ Mile: | 13.5 sec / 149.2 km/h | 19.9 sec | 14.1 sec / 145.0 km/h | 12.4 sec / 166.6 km/h |
| Top Speed: | 178.6 km/h | 74 mph | 171.9 km/h | 192.8 km/h / 119.8 mph |