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The 1973 Yamaha TX750 and 1976 Yamaha RD400 represent two chapters in Yamaha's storied history.
The 1973 Yamaha TX750 from Japan was powered by a 743cc DOHC twin producing 63hp at 7500rpm. Weighing 215.0kg (474 lbs) and with a seat height of 810mm, it was aimed at standard riders.
The 1976 Yamaha RD400 by contrast offered 398cc of 2-stroke twin power, delivering 40hp at 7000rpm. Tipping the scales at 153.0kg (337 lbs) with a top speed of 168km/h (104 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 TX750 from Japan was powered by a 743cc DOHC twin producing 63hp at 7500rpm. Weighing 215.0kg (474 lbs) and with a seat height of 810mm, it was aimed at standard riders.
The 1976 Yamaha RD400 by contrast offered 398cc of 2-stroke twin power, delivering 40hp at 7000rpm. Tipping the scales at 153.0kg (337 lbs) with a top speed of 168km/h (104 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 TX750 | 1976 Yamaha RD400 | |
|---|---|---|
| Displacement | 743 cc | 398 cc |
| Power | 63 hp | 40 hp |
| Torque | 60.0 Nm | 35.0 Nm |
| Cylinders | 2 | 2 |
| Top Speed | 185 km/h | 168 km/h |
| Quarter Mile | — | — |
| Dry Weight | 215.0 kg | 153.0 kg |
| Wet Weight | 232.0 kg | 166.0 kg |
| Seat Height | 810 mm | 790 mm |
| Wheelbase | 1450 mm | 1360 mm |
| Fuel Capacity | 14.0 L | 14.0 L |
| Gears | 5 -speed | 6 -speed |
The Verdict
Comparing these two Yamaha machines reveals the brand's evolution. The 1973 Yamaha TX750 laid the groundwork with 63hp, while the later 1976 Yamaha RD400 pushed output to 40hp. From a collector's perspective, the 1976 Yamaha RD400 holds the edge with a 6/10 rating. Either way, both are worthy additions to any Yamaha collection.
About the 1973 Yamaha TX750
The 1973 1973 Yamaha TX750 packs a 743cc DOHC twin engine with 63hp into a standard motorcycle package from Yamaha.
Full 1973 Yamaha TX750 Profile →About the 1976 Yamaha RD400
Born in 1976, the 1976 Yamaha RD400 is a 398cc twin-cylinder standard motorcycle producing 40hp from Yamaha.
Full 1976 Yamaha RD400 Profile →