GM LS1 Billet Crankshaft 4.000″ Stroke

Stroke: 4.000″ / 101.60mm

Out of stock (available on backorder)
1.900,00  Excl. VAT
Billet Crankshafts
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GM LS1 Billet Crankshaft 4.000″ Stroke

ZRP crankshafts are manufactured from aerospace grade 4340 solid billet steel and no compromises have been made to the quality of the material, in order to ensure the best possible product.
They are designed carefully, from our vast experience, to provide the best possible engine performance and the production process consists of very strict inspections to ensure that they have the best quality and tight tolerances for perfect fitment.

Solid counterweights aimed for maximum durability and increased crankshaft momentum. Rod journals are drilled for weight reduction, featuring two main sources of oil feed in order to provide enhanced lubrication at higher RPM. (Dual passage – straight through oil feeding)
We use CNC machining for precise results, multi-stage heat treatment, ION (Plasma) Nitriding for hardening and heat treatment for superior wear resistance, Magna-fluxing for flawless surface finish, shot peening for stress release, Micro-polishing for longer bearing life. Finally, they are sonic tested and X-rayed to ensure a reliable end product.
Crankshaft design features straight oil holes for better oiling of the rod journals and are balanced to +/- 0.1 using the state of the art Sunnen machines. Balance report included in the package.

All ZRP Crankshafts are fully balanced and ready to install.

Additional information


Main Journal

Rod Journal


Crank Grade

Foot Note