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.

Each piston listing in the catalog features: katalog piston fim

While physical catalogs have pictures, the part number logic is generally: FIM - [Engine Code] - [Bore Size] - [OS]

Example: FIM - MIO - 54.0 - OS100 = FIM piston for Yamaha Mio, 54mm bore, 1.00mm oversize. During race events, FIM technical scrutineers reference the

Within the catalog, FIM usually designates a "Race" series. These pistons feature:

Benefits:

Limitations: