ATHENA Piston Kit with Gaskets for 250cc 4-stroke off-road engines, built from forged high-silicon aluminum alloy for OE-level reliability and improved resistance. Includes low-friction, wear-coated Japanese piston rings for stronger performance and long service life.
ATHENA Piston Kit with Gaskets is a complete top-end solution for 250cc 4-stroke off-road motorcycles, designed to restore crisp power, reliable compression, and long-term durability. Made from a high-performance forged aluminum alloy with a high silicon content, it delivers OE-level dependability while improving resistance under demanding motocross/enduro conditions. The smooth piston profile supports consistent gas flow and efficient flame propagation for clean, strong performance.
If your engine has lost compression, started burning oil, or feels tired under load, this kit helps bring the top end back to spec—reducing friction and wear thanks to premium piston rings manufactured in Japan with wear-resistant coatings (PVD or chromium nitride).
