SBF 4340 Forged Crank - 4.1700 Stroke

The SBF 4340 Forged Crank with 4.1700 stroke is designed for small-block Ford enthusiasts and professional engine builders. It is ideal for applications that require enhanced reliability and performance, such as street performance engines, competition builds, and restorations with modern internals.

Constructed from forged 4340 steel, this crankshaft offers superior tensile strength and fatigue resistance, making it suitable for high-performance applications. The 4.1700-inch stroke geometry allows for increased displacement while ensuring compatibility with SBF blocks, enabling larger cubic-inch configurations without extensive modifications.

This crankshaft is particularly beneficial for those pushing the limits of their engines, whether through forced induction, nitrous, or naturally aspirated setups. With a weight of 63.2 lbs, it provides the structural integrity needed for high-RPM environments, ensuring long-term reliability in demanding conditions.