Lightweight Design, 4340 Billet Material: Manufactured from 4340 ?Turbo-Tuff? Billet material, ensuring durability and performance. Counterweights are fully knife edged to ensure precise balance and stability.Enhanced Strength: A multi-step heat treatment process and nitriding enhance the crankshafts’ strength and longevity.Rigorous Quality Assurance: Each crankshaft undergoes stress relief, shot peening, and 100% magnafluxing to meet our stringent quality standards.Increase Displacement with a ?Stroker? Crankshaft: Featuring an increased 94mm stroke provides a 9.3% increase over the stock stroke offering more displacement and more power.