Yamaha SRX 600 (1985-86) vs Yamaha XSR 155 (2019) vs KTM RC 390 (2016)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | KTM |
| Model: | SRX 600 | XSR 155 | RC 390 |
| Years: | 1985-86 | 2019 | 2016 |
| Engine: | Four stroke, single cylinder, SOHC, 4 valve | Four stroke, single cylinder, SOHC, 4 valve with variable valve actuation | Four stroke, single cylinder. DOHC with finger followers, 4 Valve per cylinder |
| Capacity: | 608 cc / 37.1 cu-in | 155.1 cc / 9.14 cu-in | 373 cc / 22.7 cu-in |
| Bore x Stroke: | 96 х 84 mm | 58.0 × 58.7 mm | 89 x 60 mm |
| Cooling System: | Air cooled | Liquid cooled | Liquid Cooled |
| Compression Ratio: | 8.5:1 | 11.6:1 | 12.6:1 |
| Induction: | 27mm Teikei 2KY27PV carburetor | Fuel Injection | Bosch Injection |
| Ignition: | CDI | TCI | Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment |
| Starting: | Kick | Electric | Electric |
| Max Power: | 45 hp / 34 kW @ 6500 rpm | 14.1 kW / 19 hp @ 10000 rpm | 32 kW / 43 hp @ 9500 rpm |
| Max Torque: | 4.9 kgf-m / 34 lb-ft / 46 Nm @ 5500 rpm | 14.7 Nm / 40.8 lb-ft @ 8500 rpm | 3.6 kgm /35.3 Nm @7250rpm |
| Transmission: | 5 Speed | 6 Speed slip-and-assist clutch | 5 Speed |
| Final Drive: | Chain | Chain | Chain 5/8 x 1/4” X‑Ring |
| Front Suspension: | 36mm Telescopic forks | Upside-down Telescopic fork | WP Suspension Up Side Down |
| Rear Suspension: | Dual Kayaba shocks 5-way adjustable for preload | Monoshock operating on a die-cast aluminium swingarm | WP Monoshock |
| Front Brakes: | 2x 267mm disc | Single 282mm disc 2 piston caliper, ABS | Single 300 mm disc 4 piston radial caliper |
| Rear Brakes: | Single 240mm disc | Single 240mm disc 1 piston caliper, ABS | Single 230 mm disc 1 piston caliper |
| Front Tyre: | 110/70-17 | 110/70 -17 | 110/70 R17 |
| Rear Tyre: | 150/60-17 | 140/70 -17 | 150/60 R17 |
| Wheelbase: | 1380 mm / 54.3 in | 1330 mm / 52.3 in | 1340 mm / 52.7 in |
| Seat Height: | 770 mm / 20.3 in | 810 mm / 31.8 in | 820 mm / 32.2 in |
| Ground Clearance: | 150 mm / 5.9 in | 170 mm / 6.6 in | 179 mm / 7.0 in |
| Fuel Capacity: | 15 Litres / 3.9 gal | 10 Litres / 2.6 US gal | 10 Liters / 2.64 lbs |