Pair of New Wiseco, 393M06550, .060 over, 65.50 mm Pistons for Yamaha RD 400

Fits 1976, 1977, 1978, 1979 models


Piston includes, rings, wrist pin and circlips

Wiseco pistons are known for durability, longevity and increased horsepower. Innovative forging design and piston skirt provides maximum horsepower and torque.

What are the advantages to using Wiseco Pistons?

  • All Wiseco Pistons are Forged from high silicon, low expansion aluminum alloy which offers superior strength, reduced weight, improved heat transfer and longer life.
  • Forged reinforced dome features waffle design for improved heat transfer and additional strength.
  • CNC computerized high-speed Diamond Turning Centers hold exact tolerances with no size variations.
  • Closer wrist pin boss spacing eliminates wrist pin flex



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