The Porsche MA1.23 flat-six is a highly durable power plant, but increasing displacement or building a high-compression race engine demands fortified internal hardware. Strengthen your engine block with Forged Pistons and Forged Connecting Rods designed to withstand intense cylinder pressures. Keep the rotating assembly secure at high RPMs using Uprated Engine Bolts (ARP) alongside low-friction Performance Bearings (Conrod & Mains). For owners chasing maximum top-end horsepower, swapping in Performance Camshafts drastically improves cylinder head airflow, while our Misc Engine Parts cover the essential gaskets and seals needed to complete the build.