We use cookies to provide you with the best possible user experience. By continuing to use our site, you agree to their use. To learn more, view our Cookie Policy.
FREE Shipping on orders over $50*
Toggle Nav
Signature Series Crankshaft - GM LS GEN III/IV 4.125" Stroke (58 Tooth Reluctor)
$1,920.95
Lunati Signature Series Premium line of Crankshafts are the best choice for serious racers and the strongest you will find for your engine!
In stock
SKU
60841251LUN
As the premium line of cranks offered by Lunati, Signature Series Crankshafts are the strongest you will find for your engine. The specialized non-twist 4340 forged steel construction comes completely profiled and detailed to our racing specs. Many design features such as gun-drilled mains, lightened rod journals, micropolished journals and a windage reducing contoured wing counterweight profile make the Signature Series the best choice for serious racers. All Lunati crankshafts MUST use narrow or chamfered main and rod bearings. Proven to withstand over 1500 horsepower applications.
Features:
Features:
- All rod journals are drilled with either 7/8" or 3/4" lightening holes to reduce the inertia weight of the crankshaft
- All journal radiuses are ground to .125"; roundness of each journal is .0001" or less
- Pulsed plasma nitride heat treated for increased strength and durability
- Micropolished journals
