A CFD-designed lower plenum with an integrated flow diverter ensures even distribution across all cylinders for optimal fueling and safe power gains

and competitive under any conditions with Ferrea’s trusted engineering

providing further reinforcement against vibration and impacts

Starter control with touch-to-start functionality

optimizing engine performance

BMW S38 Valves by SuperTech Exhaust Valves:33 mm A CFD-designed lower plenum withEngineered for the legendary BMW S38 inline six, the SuperTech High Performance Valve Kit delivers the durability, reliability, and airflow needed for high output applications. Designed to withstand high RPM, extreme temperatures, and intense performance demands, these valves are the ideal upgrade for E28 M5, E34 M5, and E24 M6 builds. Trusted by top engine builders, SuperTechs precision engineered valves optimize airflow, enhancing horsepower,