The 4.0-litre flat-six engine provides a robust foundation, but building a dedicated competition power plant demands upgraded internal components. Strengthening the rotating assembly with Forged Pistons and Forged Connecting Rods provides the structural integrity required to withstand high cylinder pressures and sustained high-rpm operation. Securing these components requires Uprated Engine Bolts (ARP) alongside low-friction Performance Bearings (Conrod & Mains). For engines aiming to maximize volumetric efficiency, Performance Camshafts optimize valve timing and lift. We also stock Misc Engine Parts, providing the required gaskets, seals, and hardware for complete engine overhauls.