![SR20 2.2L 91.0MM STROKE](http://www.performanceheaven.com.au/cdn/shop/products/crankshafts-SR20_1ac80b86-7142-4bd0-90f0-c58fcf70ff62_{width}x.jpg?v=1591943894)
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.