Ideal for honing high-silicon aluminum alloy blocks such as Porsche, Mercedes, Honda and Vega. Use with Sunnen honing felts (MM33-FO5, sold separately). Final condition is achieved by coating the felt set and entire polished surface of the cylinder wall with the Silicon Compound. Resulting finish will be a dull matte that allows pistons and rings to ride on silicon instead of aluminum.

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NOTE: Goodson is authorized to ship Sunnen products only within The United States and Canada.