![RB30 3.2L 90.0MM STROKE ** EN40B MATERIAL **](http://www.performanceheaven.com.au/cdn/shop/products/crankshafts-SR20_fa2ea496-d827-417b-a12f-4291097bc6cd_{width}x.jpg?v=1591943892)
NITTO 4340 Billet Steel crankshafts are manufactured from high quality true billet round bar stock. Most other aftermarket crankshafts are manufactured using cast forged material, which is a much cheaper manufacturing process and hence carry a cheaper price tag but their performance, strength and horsepower capabilities are significantly compromised compared to that of a true billet crankshaft. An engine with a 4340 billet steel crankshaft will rev faster and cleaner due to the different harmonics produced from the high grade material.