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The 1973 Yamaha RD250 and 1974 Yamaha TX500 represent two chapters in Yamaha's storied history.
The 1973 Yamaha RD250 from Japan was powered by a 247cc 2-stroke twin producing 30hp at 7500rpm. Weighing 143.0kg (315 lbs) and with a seat height of 790mm, it was aimed at standard riders.
The 1974 Yamaha TX500 by contrast offered 498cc of DOHC twin power, delivering 48hp at 8500rpm. Tipping the scales at 190.0kg (419 lbs) with a top speed of 170km/h (106 mph), it offered a distinct riding experience. 1970s bikes from the Japanese superbike revolution are increasingly sought after. Clean, original examples have seen significant value appreciation.
The 1973 Yamaha RD250 from Japan was powered by a 247cc 2-stroke twin producing 30hp at 7500rpm. Weighing 143.0kg (315 lbs) and with a seat height of 790mm, it was aimed at standard riders.
The 1974 Yamaha TX500 by contrast offered 498cc of DOHC twin power, delivering 48hp at 8500rpm. Tipping the scales at 190.0kg (419 lbs) with a top speed of 170km/h (106 mph), it offered a distinct riding experience. 1970s bikes from the Japanese superbike revolution are increasingly sought after. Clean, original examples have seen significant value appreciation.
Specifications Comparison
| 1973 Yamaha RD250 | 1974 Yamaha TX500 | |
|---|---|---|
| Displacement | 247 cc | 498 cc |
| Power | 30 hp | 48 hp |
| Torque | 24.0 Nm | 40.0 Nm |
| Cylinders | 2 | 2 |
| Top Speed | 145 km/h | 170 km/h |
| Quarter Mile | — | — |
| Dry Weight | 143.0 kg | 190.0 kg |
| Wet Weight | 155.0 kg | 206.0 kg |
| Seat Height | 790 mm | 800 mm |
| Wheelbase | 1310 mm | 1400 mm |
| Fuel Capacity | 12.0 L | 13.0 L |
| Gears | 6 -speed | 5 -speed |
The Verdict
Comparing these two Yamaha machines reveals the brand's evolution. The 1973 Yamaha RD250 laid the groundwork with 30hp, while the later 1974 Yamaha TX500 pushed output to 48hp. From a collector's perspective, the 1973 Yamaha RD250 holds the edge with a 5/10 rating. Either way, both are worthy additions to any Yamaha collection.
About the 1973 Yamaha RD250
Born in 1973, the 1973 Yamaha RD250 is a 247cc twin-cylinder standard motorcycle producing 30hp from Yamaha.
Full 1973 Yamaha RD250 Profile →About the 1974 Yamaha TX500
Yamaha released the 1974 Yamaha TX500 in 1974 with a 498cc DOHC twin powerplant making 48hp — a definitive standard motorcycle.
Full 1974 Yamaha TX500 Profile →