The ATV250 φ71 Cylinder Block is engineered to deliver strong performance and reliable engine support for 250cc all-terrain vehicles. Made from high-strength aluminum alloy with an integrated cast-iron cylinder liner, this cylinder block provides excellent thermal efficiency, improved durability, and smooth engine operation under demanding riding conditions.
Its φ71mm bore offers stable compression and optimal compatibility with standard 250cc piston assemblies. Precision machining ensures accurate fitment, reduced friction, and extended engine lifespan. Designed for easy installation and dependable upgrade or replacement for a wide range of 250cc ATV engines.




