Balanced and lightened up.
Piston coated with Molybdenum Disulfide which lubricates it to reduce friction and resistance even under high temperatures, in effect, provides better engine performance and top RPMs.
Zenoah factory coated in Japan.
Fits 34mm Zenoah engine cylinders (e.g. G260RC / G270RC / Chung Yang CY26RC engines) and similar engines.