ATHENA Forged Race piston kit for 250cc 2-stroke engines, built for high mechanical and thermal loads and proven on dyno and track. Supplied with low-friction piston rings for OE cylinder fit and strong performance.
Main advantage / unique feature: This ATHENA Forged Race piston kit is engineered to handle extreme mechanical and thermal stress while maintaining consistent performance. It has been validated on engine dynamometer benches under progressive load and then proven on track. The included piston rings are designed to reduce friction against the OE cylinder for efficient power delivery and reliability.
How it helps: When your 2-stroke top end needs a refresh, this kit provides a race-ready replacement that restores compression and smooth operation, helping you ride harder with confidence and reduce the risk of premature wear in demanding conditions.
✅ High resistance to mechanical and thermal stresses✅ Tested on dyno under progressive load and validated on track✅ Low-friction piston rings for OE cylinder compatibility and improved performance
🔹 Race-focused construction for hard riding and consistent output🔹 Reduced friction helps efficiency and durability in the OE cylinder🔹 Complete kit format makes top-end service simpler and faster
📌 Brand: ATHENA📌 Vendor part number: S4F06640018A📌 Engine type: 2-Stroke📌 Displacement: 250 cc📌 Bore size: 66.34 mm📌 Piston head shape: Domed📌 Piston material: 4032 Aluminum Alloy📌 Piston size: Standard Size A📌 Compression ratio: Stock📌 Units: Kit
⭐ Built for demanding riding with proven testing under load⭐ Quality materials and manufacturing (reverse extrusion) for dependable service life⭐ A practical, performance-oriented choice for restoring your 250cc 2T top end
