O. S. Engines Cylinder Rebuild Kit For .12XZ SPEED


The O. S. .12XZ Speed rebuild kit features a hardened chrome-plated cylinder liner for high durability and long life. The machined aluminium piston features parallel rings that trap fuel oils and use them as a seal to enhance compression and boost power and a four port cylinder. Racers can now get everything they need in one package.


  • One cylinder liner
  • One piston
  • One connecting rod
  • One piston pin
  • Two piston pin retainers.

OSMG4801   Cylinder Rebuild Kit 12XZ SP   Retail: $159.99   Street: $134.99


Source: O.S. Engines

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