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Since 1952

Speedway Plasma Moly Piston Rings, 4.125 Bore, Style C

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Piston Ring Style:
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Piston Ring Design:
Top Ring Material:
Plasma Moly Coated Cast Iron
Second Ring Material:
Plasma Moly Coated Cast Iron
Top Ring Thickness:
Second Ring Thickness:
Oil Ring Thickness:
Oil Ring Tension:
Standard Tension
Piston Ring Diameter:
Speedway Plasma Moly Piston Rings, 4.125 Bore, Style C

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Q & A

What's in the Box

These Speedway premium Plasma Moly piston rings work with either gasoline only, have a 7000 max sustained rpm rating, and are suitable for up to 12.5:1 compression and 450 hp.

Ring Style Chart (GIF)


Speedway Piston Ring Hierarchy

  • Good - Speedway Gas Proven Series
  • Better -Speedway Moly
  • Best - Speedway Plasma Moly
  • Ultimate Race - Speedway Pro Series

Item Details

Gasoline use, 12.5 max compression
7,000 max sustained rpm and up to 450 hp

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Ring Style Chart (GIF)

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Ring Style Chart (GIF)

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Ring Style Chart (GIF)

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Ring Style Chart (GIF)

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