Yamaha XSR 155 (2019) vs Yamaha SRX 600 (1985-86) vs Yamaha XJ 900F (1985-89)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha |
| Model: | XSR 155 | SRX 600 | XJ 900F |
| Years: | 2019 | 1985-86 | 1985-89 |
| Engine: | Four stroke, single cylinder, SOHC, 4 valve with variable valve actuation | Four stroke, single cylinder, SOHC, 4 valve | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder. |
| Capacity: | 155.1 cc / 9.14 cu-in | 608 cc / 37.1 cu-in | 891 cc / 54.3 cu-in |
| Bore x Stroke: | 58.0 × 58.7 mm | 96 х 84 mm | 68.5 x 60.5 mm |
| Cooling System: | Liquid cooled | Air cooled | Air cooled |
| Compression Ratio: | 11.6:1 | 8.5:1 | 9.6:1 |
| Induction: | Fuel Injection | 27mm Teikei 2KY27PV carburetor | 4x Mikuni BS36 |
| Ignition: | TCI | CDI | CDI |
| Starting: | Electric | Kick | Electric |
| Max Power: | 14.1 kW / 19 hp @ 10000 rpm | 45 hp / 34 kW @ 6500 rpm | 98 hp / 72 kW @ 9000 rpm |
| Max Torque: | 14.7 Nm / 40.8 lb-ft @ 8500 rpm | 4.9 kgf-m / 34 lb-ft / 46 Nm @ 5500 rpm | 81 Nm / @ 7000 rpm |
| Transmission: | 6 Speed slip-and-assist clutch | 5 Speed | 5 Speed |
| Final Drive: | Chain | Chain | Shaft |
| Front Suspension: | Upside-down Telescopic fork | 36mm Telescopic forks | 37mm Telescopic fork |
| Rear Suspension: | Monoshock operating on a die-cast aluminium swingarm | Dual Kayaba shocks 5-way adjustable for preload | Twin shock, Swingarm |
| Front Brakes: | Single 282mm disc 2 piston caliper, ABS | 2x 267mm disc | 2x 267mm discs |
| Rear Brakes: | Single 240mm disc 1 piston caliper, ABS | Single 240mm disc | Single 267mm disc, |
| Front Tyre: | 110/70 -17 | 110/70-17 | 100/90-18 |
| Rear Tyre: | 140/70 -17 | 150/60-17 | 120/90-18 |
| Wheelbase: | 1330 mm / 52.3 in | 1380 mm / 54.3 in | 1480 mm / 58.2 in |
| Seat Height: | 810 mm / 31.8 in | 770 mm / 20.3 in | 780mm / 30.7 in |
| Ground Clearance: | 170 mm / 6.6 in | 150 mm / 5.9 in | 145mm / 5.7 in |
| Wet Weight: | 134 kg / 295.4 lbs | 172 kg / 379.2 lbs | 244 kg / 537.9 lbs |
| Fuel Capacity: | 10 Litres / 2.6 US gal | 15 Litres / 3.9 gal | 22 Litres / 5.8 US gal |