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Factory official release picture of bright yellow Yamaha RD400 motorcycle from profile

1976 Yamaha RD400

To continue in success and popularity of the "race developed" RD350, Yamaha in summer 1975 introduced a direct successor - the RD 400 series. Early Yamaha RD250 also continued with slight modification into the new era with most parts similar and identical to the new 1976 Yamaha RD400.

 

The new RD400 model was immediately branded as best of the RD series Yamaha built. It’s popularity was magnified by 1 year warranty with unlimited mileage provided by the Japanese manufacturer.

 

Both Yamaha RD 250 & Yamaha RD 400 have air-cooled twin parallel two stroke engines and autolube oil injection. In comparison to the RD350, the new RDs received: upgrade to the intake system, new reed valves, single piston disc front and rear brakes and cast wheels (wire spoke on 1976 Yamaha RD250). Yamaha RD 400 received a brand new 399cc rubber mounted engine that was free of vibrations. Both models had lots of chrome parts, lots of power and were made to last!

 

Yamaha RD400 Improvements over time 

In 1978 CDI induction was introduced and foot pegs were placed above the exhaust pipes, which now had longer mufflers and thicker manifolds.

 

1979 the RD400 diversified to meet stricter emission legislation throughout North America. To commemorate Daytona racing stars Kenny Roberts and Mike Baldwin, the new model was named Daytona Special. The main differences between US and Canadian version was ignition system and modifications to carbs and exhaust system.

 

Nowadays both models are in a restoration boom, with motorcycle enthusiasts revamping their rusty barn finds into stunning Yamaha cafe racers and custom projects. To find an original RD400 is an equivalent of finding a treasure.

 

Yamaha RD 400 Parts - RD400 Cafe Parts

Most of the original Yamaha RD250 parts and Yamah RD400 parts are already discontinued. To fill in the gap and help keep these legendary motorbikes on the road, we decided to offer a whole range of quality reproductions.

 

We now have over one hundred Yamaha RD 250 & spares for Yamaha RD400 now in stock and keep adding more. If you can’t find the part you are looking for, please email us as we will do our best to source it out.

 

 

For further information about 79 RD400 Daytona Special models and their history visit The Morocyclist Online.

The test drive review can be found on Trade Motorcycles.

There is also lots of help available from fellow motorcycle enthusiasts on the Aircooled RD Forum

We also have a dedicated section to Yamaha RD250 LC parts.


Model Europe US/CAN Oceania/Other
1976 Yamaha rd250c 1A2-00 1A6-00 1A0 / 1A4 / 1A6
1976 Yamaha rd400c  (1975 Yamaha rd400 in US) 1A3-001 1A1-00 1A5 / 1A7
1977 Yamaha rd250d & rd250dx  1A2-00 (1N9 Germany)   1U2
1977 Yamaha rd400d & Yamaha rd400dx 1A3-10 1A1-00 1A7 / 1T7
1978 Yamaha rd250e 1A2-22 (2R8)    
1978 Yamaha rd400e 1A3-110 (2R9) 1A1  
1979 Yamaha rd250f  1A2-43 (2T0 Germany, 2T1 - France)   2V3 / 2W3
1979 Yamaha rd400f (1979 rd400 Daytona) 1A3-333 (2T2 - France) 2V0 (USA) / 2R9 (CAN) 2V4 / 2W4
1980 Yamaha rd400g Daytona Special 3J7 2V0 (USA) / 3J7 (CAN) 3M3 / 3M4

If you require parts diagram or Yamaha RD400 parts list for any above, please contact us.