Fankenuo 52.4mm Big Bore Cylinder Head w/ 66mm Valve Assembly & Piston Kit for 4-Str 110cc Engine

Designed for 4-stroke 110cc engines, this Fankenuo replacement kit pairs a 52.4mm cylinder head with a 4mm big-bore design to increase both horsepower and torque for a livelier ride. The 66mm valve assembly improves airflow into the combustion chamber, sharpening throttle response and acceleration feel. Included piston kit is built for durability and forms a tight seal to reduce oil consumption while preserving consistent engine output over time. Installation is straightforward, making this kit suitable for experienced mechanics and DIYers who want an easy upgrade to a go-kart or dirt bike. Engine-specific fitment ensures reliable operation and noticeable performance gains without additional modifications.