Eagle offers a wide variety of stock replacement crankshafts, and high performance and racing crankshafts. The Eagle cast steel cranks offer an economical replacement for a stock OEM type crank. They are available for several popular American V8 engine types. 4130 forged steel crankshafts are designed for high performance, high torque and horsepower street and race vehicles. 4340 forged cranks are the top of the line Eagle racing cranks which can also be used on the street or strip. These are the highest strength forged crankshafts that Eagle offers. The 4130 and 4340 cranks are available for a wide assortment of engines. Eagle stroker crankshafts, in a variety of different stroke lengths, are also available on special Blue Collar Performance.