Yamaha RD 350F (1985) vs Yamaha XSR 155 (2019)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | RD 350F | XSR 155 |
| Years: | 1985 | 2019 |
| Engine: | Two stroke, parallel twin cylinder, YPVS | Four stroke, single cylinder, SOHC, 4 valve with variable valve actuation |
| Capacity: | 347 cc / 21.1 cu-in | 155.1 cc / 9.14 cu-in |
| Bore x Stroke: | 64 х 54 mm | 58.0 × 58.7 mm |
| Cooling System: | Liquid cooled | Liquid cooled |
| Compression Ratio: | 6.2 :1 | 11.6:1 |
| Lubrication: | Autolube | Wet sump |
| Induction: | 2x 26mm Mikuni slide-needle carburetor | Fuel Injection |
| Ignition: | Flywheel magneto CDI | TCI |
| Starting: | Kick | Electric |
| Max Power: | 59 hp / 43.9 kW @ 9000 rpm | 14.1 kW / 19 hp @ 10000 rpm |
| Max Torque: | 40.2 Nm / 4.1 kgf-m / @ 8000 rpm | 14.7 Nm / 40.8 lb-ft @ 8500 rpm |
| Clutch: | Wet multiplate | Wet multiple-disc |
| Transmission: | 6 Speed | 6 Speed slip-and-assist clutch |
| Final Drive: | Chain | Chain |
| Front Suspension: | 35mm Telescopic forks air assistance and variable damping | Upside-down Telescopic fork |
| Rear Suspension: | Rising rate Monocross 5-way preload | Monoshock operating on a die-cast aluminium swingarm |
| Front Brakes: | 2x 260mm disc 2 piston calipers | Single 282mm disc 2 piston caliper, ABS |
| Rear Brakes: | Single 260mm disc 1 piston caliper | Single 240mm disc 1 piston caliper, ABS |
| Front Tyre: | 90/90-18 51H | 110/70 -17 |
| Rear Tyre: | 110/80-18 58H | 140/70 -17 |
| Wheelbase: | 1385 mm / 54.5 in | 1330 mm / 52.3 in |
| Seat Height: | 790 mm / 31.1 in | 810 mm / 31.8 in |
| Ground Clearance: | 165 mm / 6.4 in | 170 mm / 6.6 in |
| Wet Weight: | 155 kg / 341.7 lbs | 134 kg / 295.4 lbs |
| Fuel Capacity: | 17 Litres / 4.5 US gal | 10 Litres / 2.6 US gal |