TNK Ported Cylinder Head for the 2022+ Honda Grom / Monkey

Designed to increase horsepower and torque throughout the RPM range, this hand-crafted ported cylinder head features a carefully developed intake port that improves airflow while maintaining optimal air velocity. Equipped with upgraded valve springs, it’s built to support everything from daily street riding to high-performance engine builds.

Whether you’re running a stock displacement engine or a big bore kit, this head provides the airflow needed to unlock additional performance with proper ECU calibration.

Features

• Hand-crafted ported 25 mm intake port optimized for the factory throttle body
• Port design engineered to improve airflow while maintaining high intake velocity
• Flush valve guides for smoother air passage
• Compatible with stock bore and aftermarket big bore kits
• Works with OEM and aftermarket camshafts
• Includes upgraded valve springs and retainers
• ECU tuning is required to achieve optimal performance
• Recommended with TNK performance camshafts for the best results