While the factory S63B44 V8 is an engineering marvel, pushing your F90 M5 toward four-figure horsepower requires serious internal reinforcement. Extreme cylinder pressures from aggressive mapping and hybrid turbochargers will easily test the limits of stock components. Fortify your block using high-strength Forged Pistons and heavy-duty Forged Connecting Rods/Conrods. Secure the rotating assembly with high-tensile Upgraded Engine Bolts (ARP) and reduce friction utilizing race-specification Performance Bearings (Conrod & Mains). Guarantee a complete seal under massive boost with heavy-duty Engine Gaskets, and maximize your V8's volumetric efficiency with Performance Camshafts and Valve Spring Upgrades.