The S68 architecture is a technological marvel, but pushing the boundaries of this hybrid V8 beyond factory limits demands severe internal reinforcement. If you are chasing hypercar-level horsepower in your G90 or G99, fortifying the engine block is a necessity. Safeguard your cylinders against extreme combustion pressures with high-strength Forged Pistons and heavy-duty Forged Connecting Rods/Conrods. Lock the rotating assembly down using high-tensile Upgraded Engine Bolts (ARP) and reduce internal friction with race-spec Performance Bearings (Conrod & Mains). Secure your build with reinforced Engine Gaskets, and maximize top-end breathing with Performance Camshafts and Valve Spring Upgrades.