Description
Restore Your Fantic XEF 310’s Original Performance
Bring your Fantic XEF 310 back to its peak efficiency and throttle response with Athena’s Standard Bore Cylinder Kit, engineered for maximum reliability, precise manufacturing, and long-lasting performance.
This kit is the perfect solution for riders and mechanics who want to rebuild the engine to OEM specifications with no compromises on quality.
Premium Components for a Complete Rebuild
The kit includes:
A high-silicon aluminum alloy cylinder with an integrated steel liner using Athena’s proprietary co-casting process for excellent heat dissipation and wear resistance.
A forged high-performance piston, CNC-machined for ultra-tight tolerances and coated with molybdenum disulfide to minimize friction and noise.
Aerospace-grade pin and rings, designed to withstand the high loads of modern enduro riding.
A complete gasket set, featuring a laser-cut MLS (Multi-Layer Steel) head gasket, ensuring perfect sealing under high pressure and temperature.
OEM-Level Fitment and Easy Installation
Athena’s Standard Bore Kit matches the exact specifications of the original Fantic 310 engine.
Installation is straightforward and requires no modifications — ideal for major maintenance, professional rebuilds, or post-race servicing.
Racing-Proven Reliability
Developed with the same engineering expertise Athena applies to components used in MXGP, EnduroGP, and professional off-road racing, this cylinder kit ensures smooth power delivery, excellent durability, and consistent performance even under heavy-duty use.
Aluminum cylinder with integrated co-cast steel liner
