Smeding Performance Crankshafts start out as a 4340 steel alloy core, are forged by non-twist machinery, shot peened to decrease surface stress, heat treated in increase tensile strength and finally nitrided to prevent surface wear. All Smeding Performance Crankshafts come with the reluctor wheel already installed for you, just select which tooth count you need! LS 4.000" Crankshaft: 4.000” Stroke 4340 Forged High Tensile Strength Alloy 24x or 58x Reluctor Wheel Included

Smeding Performance Crankshafts start out as a 4340 steel alloy core, are forged by non-twist machinery, shot peened to decrease surface stress, heat treated in increase tensile strength and finally nitrided to prevent surface wear. All Smeding Performance Crankshafts come with the reluctor wheel already installed for you, just select which tooth count you need! LS 4.125" Crankshaft: 4.125” Stroke 4340 Forged High Tensile Strength Alloy 24x or 58x Reluctor Wheel Included