ensuring performance with precise reliability

By doing this

more spring travel will be retained to combine a comfortable spring with harmonic dampener for the guaranteed best driving comfort

making them ideal for forced induction builds

For the most extreme performance requirements

B58 Combustion Chamber Upgrade Service GTR ensuring performance with precise reliability5150 AutoSport Combustion Chamber Upgrade Service for BMW and Toyota B58 Engines Please note that price is based on customer providing clean, disassembled 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