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Today, NVH characteristics are vital to satisfying the demands of modern internal combustion engine. For this purpose, forged crankshaft has been applied unexceptionally to engine instead of cast crankshaft. So, Hyundai Motor Company (HMC) developed new forged crankshaft to improve NVH characteristics in the new V6 engine. But, Forged V6 crankshaft has limitation of cosmetic form because of complexity of its die parting line. HMC's new forged V6 crankshaft with 6-counterweights was developed through optimized design for low cost, high stiffness, easy productibility and compact size. This new crankshaft acquired the patent in many countries.

Today, light connecting rods are vital to satisfying the demands of modern internal combustion engines. HYUNDAI Motor Company (HMC) has applied powder metal forged connecting rods instead of conventional hot forged connecting rods to obtain low product costs and to improve NVH characteristics and bearing reliability. Light connecting rods were developed through optimized design with high quality and low cost. Notably, the mass of a powder metal forged connecting rod is 17.7% lighter than that of a conventional hot forged type connecting rod, and its crank end is 22.5 % lighter than that of a conventional type connecting rod. Light connecting rods result in reduced crankshaft mass, so the mass of the main moving parts can be reduced. With this mass reduction, bearing reliability and NVH characteristics can be enhanced.