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2017-2023 Harley-Davidson FLH/FLT/Special/Limited/ST M8 models
Second horsepower
1 Replacement Big Turbocharger
Optional Thundermaxx ECU with O2 Sensors (Preinstalled Mapping Included)
Billet CNC aluminum adapters
Polaris Patriot 850 Boost Airbox Valve High Flow 3 Cylinder 2017-2023 Harley-Davidson FLH/FLT/Special/Limited/ST M8 modelsSilber Turbos Airbox Valve Maximum Performance for Your Patriot Boost The Silber Turbos Airbox Valve has been years in the making, meticulously tested and fine tuned to deliver what your Polaris Patriot Boost engine needs mostuncompromised airflow and throttle response. While the factory reed valve performs well when new, it quickly degrades as the reed pedals wear out. Our innovative plunger style valve features a positive rubber seal, ensuring a