When you choose the 5150 AutoSport rod bearings

Thermal-resistant to withstand high-boost

Capable of supporting engine speeds up to 11

90" OD runners

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M52TU Combustion Chamber Upgrade Service x6 28iX When you choose the 51505150 AutoSport Combustion Chamber Upgrade Service for BMW M52TU Engines Please note that price is based on customer providing core. If you need help sourcing a core, please contact our sales team. Our CNC Cylinder Head Combustion Chamber Service is a precision machining process where the combustion chambers of an engine's cylinder head are reshaped and refined using Computer Numerical Control (CNC) technology, optimizing engine performance for street