Engines and Components› Crankshafts and Components

Eagle Specialty Products

Forged 4340 Steel Crankshaft, 3.480" Stroke, 1-Piece Rear Main

$838.99

SKU: EAG435334805700

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In Stock
Ships by Sep 9
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$100 Minimum Order
30 Days Return
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Overview

The Eagle Specialty Products crankshaft is a forged 4340 steel component designed for high-performance applications. It features a 3.480-inch stroke and internal engine balance, with a 1-piece rear main seal style. This crankshaft requires narrow bearings but does not include rod or main bearings.
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Constructed from forged 4340 steel, it features a 3.480-inch stroke, internal engine balance, and a 1-piece rear main seal design. Key specifications include a 2.100-inch rod journal diameter and a 2.448-inch main journal diameter. The journals are precision-ground and micro-polished to less than 5 R.A. for optimal performance and durability. While this crankshaft requires narrow bearings, rod and main bearings are not included. Further enhancing its performance capabilities, the crankshaft has chamfered oil holes for improved lubrication and a .125-inch radius on rod and main journals for increased strength. A target bob weight of +/- 2 percent significantly reduces balancing time during assembly.

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.

Fitment

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Specifications

BrandEagle Specialty Products
Part NumberEAG435334805700
CategoryEngines and Components

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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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