CNC ported Harley-Davidson M8 cylinder head with +1mm oversized valves for improved airflow and street performance.

M8 WARD +1MM OVERSIZED

    • +1MM oversized valves.

    • Extensive 5-axis CNC porting.

    • Multi-radius competition valve job.

    • Performance bronze valve guides.

    • Re-machining of head gasket surface.

    • For HD M8 Oil Cooled and Twin Cooled Models.

High-performance M8 cylinder head CNC ported with +2mm oversized valves for enhanced CFM and power output.

M8 WARD +2MM OVERSIZED

    • +2MM oversized valves.

    • Extensive 5-axis CNC porting.

    • Multi-radius competition valve job.

    • Performance bronze valve guides.

    • Oversize bronze valve seats.

    • Re-machining of head gasket surface.

    • For HD M8 Oil Cooled and Twin Cooled Models.

Race-spec M8 head CNC ported for +4mm oversized valves, designed for maximum horsepower and flow at high RPM.

M8 WARD +4MM OVERSIZED FULL RACE

    • +4MM Titanium oversized valves.

    • 70mm square intake mod

    • Burn's exhaust port mod

    • Extensive 5-axis CNC porting.

    • Multi-radius competition valve job.

    • Performance bronze valve guides.

    • Oversize bronze valve seats.

    • Re-machining of head gasket surface.

    • Re-machining of combustion chambers.

    • For HD M8 Oil Cooled Heads (Not available for twin cooled heads).

Center-cooled Milwaukee-Eight head CNC ported with +2mm valves for optimal heat management and performance.

CENTER-COOLED M8 WARD +2MM OVERSIZED

    • +2MM oversized valves.

    • Extensive 5-axis CNC porting.

    • Multi-radius competition valve job.

    • Performance bronze valve guides.

    • Oversize bronze intake seats.

    • Re-machining of head gasket surface.

    • Re-machining of combustion chambers.

    • For 2023.5 model year and up.

    • For Center-Cooled M8 heads only (Non SE).

Screamin’ Eagle center-cooled M8 head with Ward Performance +2mm porting for top-tier street and race applications.

SE CENTER-COOLED M8 WARD +2MM OVERSIZED

    • Stainless Steel+2MM valves .

    • Extensive 5-axis CNC porting.

    • Multi-radius competition valve job.

    • Performance bronze valve guides.

    • Re-machining of head gasket surface.

    • For 2024 model year and up.

    • For Center-Cooled M8 heads only.

S&S MK136 M8 cylinder head precision CNC ported by Ward Performance with +2mm valves for superior airflow.

S&S MK136 M8 WARD +2MM OVERSIZED

    • +2MM oversized valves. 

    • Extensive 5-axis CNC porting.

    • Multi-radius competition valve job.

    • Performance bronze valve guides.

    • Re-machining of head gasket surface.

    • Re-machining of the combustion chamber.

    • For S&S MK136 M8 style heads only.