Z4 M Coupe and Roadster

These precision-engineered camshafts improve power delivery and ensure durability under demanding conditions

including EV8-Z18 for superior tensile strength

Upgrading to this Ferrea kit ensures reliable valve control

F22 / F23 230i

BMW S58 Billet Intake Manifold / Charge Air Cooler 11121721546 Z4 M Coupe and RoadsterRK Autowerks Billet Intake Manifold For BMW S58 Engines Designed to perform under pressure, the RK Autowerks Billet Intake Manifold is engineered to help your S58 powered BMW stay cooler and more consistentno matter how hard you push it. Crafted entirely in house at RK Autowerks in Texas, this intake manifold is CNC machined from billet aluminum, expertly welded, and rigorously tested by lead engineer Raza and his team. At 5150, were proud to partner