Engines and Components› Pistons and Piston Rings

Lunati

3.750" Stroke Internally Balanced Rotating Assembly Kit

$2,704.31

SKU: 37502VRK04LUN

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Overview

The Lunati 37502VRK04LUN is a balanced, internally balanced engine rotating assembly kit designed for performance engine builds. It features a 4340 forged steel crankshaft with a 3.750" stroke and Icon forged flat-top pistons.
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The Lunati 37502VRK04LUN is a balanced, internally balanced engine rotating assembly kit engineered for performance builds, supporting engine builds producing up to 900 horsepower and capable of handling power adders like nitrous, turbos, and blowers. This kit includes a Lunati Voodoo 4340 forged crankshaft with a 3.750" stroke and 350 main, paired with Lunati Voodoo H-Beam rods (6.000" length) featuring ARP 2000 bolts. The assembly also incorporates Icon premium forged flat-top pistons with a -4.9cc dish, H-series race engine rod bearings, main bearings, and a 2-piece rear main seal. A performance file-to-fit ring set is also included.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandLunati
Part Number37502VRK04LUN
CategoryEngines and Components

Videos

Lunati Voodoo Crankshaft Line Up at PRI 2012

Lunati Voodoo Crankshaft Line Up at PRI 2012

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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