Unlike generic "local" pistons, FIM adheres to strict Japanese metallurgical standards. They are renowned for using high-grade with specific thermal expansion rates. This means an FIM piston heats up evenly, reduces the risk of "cold seizure" (piston jamming in the bore when cold), and maintains ring seal at high RPM.
A piston kit includes the piston itself, rings, and sometimes a wrist pin clip. However, the Katalog Piston FIM explicitly states that cylinder gaskets and head gaskets are sold separately. Always check the "Compatibility" column for required gasket thickness. How to Download and Use the Digital Catalog Gone are the days of flipping through paper books at a spare part store (toko spare part). Most official distributors provide a Digital Katalog Piston FIM in PDF format or a web-based lookup tool. katalog piston fim
| Code in Catalog | Actual Oversize | When to use it | | :--- | :--- | :--- | | | STD (Standard) | Original cylinder, no wear. | | 125 | 0.25 mm | Minor taper wear in cylinder. | | 150 | 0.50 mm | Deep scratches or oval cylinder. | | 175 | 0.75 mm | Re-bored cylinder, common for GL Max to 130cc. | | 200 | 1.00 mm | Max legal bore up for some classes. | Unlike generic "local" pistons, FIM adheres to strict
When it comes to two-stroke and four-stroke engine performance, few names carry as much weight in the aftermarket racing scene as FIM . For mechanics, tuners, and racing enthusiasts in Indonesia and across Southeast Asia, the "Katalog Piston FIM" (FIM Piston Catalog) is more than just a list of parts—it is a blueprint for engine reliability, compression power, and thermal efficiency. A piston kit includes the piston itself, rings,
(Happy searching!) Disclaimer: Specifications and part numbers are subject to change by the manufacturer. Always verify fitment with a professional mechanic.