Yamaha RD 350 (1976) vs Yamaha WR 125X (2015)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | RD 350 | WR 125X |
| Years: | 1976 | 2015 |
| Engine: | Two stroke, parallel twin cylinder, reed valves | Four stroke, forward inclined single cylinder, DOHC, 4 valve |
| Capacity: | 347 cc / 21.1 cu-in | 124.7 |
| Bore x Stroke: | 64 х 54 mm | 52 x 58.6 mm |
| Cooling System: | Air cooled | LLiquid cooled |
| Compression Ratio: | 6.6:1 | 11.2:1 |
| Induction: | 2, Mikuni VM28 SC | Fuel injection |
| Ignition: | Battery, dual coils, breaker points | TCI |
| Starting: | Kick | Electric |
| Max Power: | 39 hp / 28.5 kW @ 7500 rpm | 10.9 kW / 15 hp @ 9000 rpm |
| Max Torque: | 24.1 lb-ft / 32.6 Nm @ 7000 rpm | 12.2 Nm / 1.24 kgf-m @ 6000 rpm |
| Clutch: | Wet, multi-plate | Wet, multiple coil spring |
| Transmission: | 6 Speed | 5 Speed |
| Final Drive: | Chain | Chain |
| Gear Ratio: | 1st 19.86:1 2nd 12.74:1 3rd 9.45:1 4th 7.46:1 5th 6.37:1 6th 6.63:1 | 1st 70/30 (2.333) 2nd 46/15 (3.067) 3rd 33/16 (2.063) 4th 30/19 (1.579) 5th 34/27 (1.259) 6th 25/24 (1.042) |
| Frame: | Tubular, double cradle | Steel double cradle |
| Front Suspension: | Telescopic forks | Telescopic fork |
| Rear Suspension: | Dual shocks | Swinging arm link suspension |
| Front Brakes: | Single 267mm disc 2 piston caliper | Single 298mm disc |
| Rear Brakes: | 178mm Drum | Single 220mm disc |
| Front Tyre: | 3.00-18 | 110/70-17 |
| Rear Tyre: | 3.25-18 | 140/70-17 |
| Rake: | 27.5º | 25° |
| Trail: | 104 mm / 4.10 in | 79 mm / 3.1 in |
| Wheelbase: | 1320.8 mm / 52.0 in | 1430 mm / 56.3 in |
| Seat Height: | 800 mm / 31.5 in | 920 mm / 36.2 in |
| Wet Weight: | 155 kg / 342 lbs | 137 kg / 302 lbs |
| Fuel Capacity: | 15.9 Litres / 4.2 gal | 8.5 Litres / 2..2 US gal |