To enter a piston in the FIM catalog, manufacturers must submit:
Once approved, the piston is uniquely coded and added to the online and printed catalog. Changes to design require re-homologation.
Below is a simulated breakdown based on actual market data for Southeast Asian and Latin American markets. (Always verify with a real FIM printed catalog for your specific engine year). katalog piston fim
During race events, FIM technical scrutineers reference the catalog to:
Any deviation leads to penalty – from grid demotion to disqualification, as in the 2022 case where a WorldSBK team used uncatalogued pistons with a modified crown profile. To enter a piston in the FIM catalog,
Standard pistons are rarely used in rebuilds because cylinder bores wear out. The catalog provides:
Not all FIM pistons are created equal. The catalog is divided into series, each designed for a specific compression ratio and duty cycle. Declaration of materials (including traceable certificates)
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