Engines and Components› Pistons and Piston Rings

Eagle Specialty Products

Balanced Street & Strip Rotating Assembly

$1,867.99

SKU: EAGB13057E030

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
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Overview

The Eagle B13057E030 Balanced Street & Strip Rotating Assembly is engineered for naturally aspirated, pump gas street engines. This assembly provides a cost-effective way to enhance performance without reworking OE parts. Key specifications include a 3.750" cast crankshaft, 6.000" I-Beam connecting rods with ARP 8740 bolts, and forged 4032 aluminum Mahle flat top pistons. It also includes plasma-moly file-fit rings and King SI rod/main bearings.
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The Eagle B13057E030 Balanced Street & Strip Rotating Assembly is meticulously engineered for enthusiasts seeking to enhance their naturally aspirated, pump gas street engines. This complete assembly serves as a cost-effective and quality-assured alternative to the labor-intensive process of reworking original equipment parts. At its core, this assembly features a robust 3.750" cast steel crankshaft, precisely paired with 6.000" I-beam connecting rods constructed from forged 5140 steel. Reliability is further bolstered by the inclusion of ARP 8740 bolts. The pistons are forged 4032 aluminum from Mahle, featuring a flat top design with a -5cc dome volume. The package is rounded out with plasma-moly file-fit rings and King SI rod and main bearings, ensuring a comprehensive and durable rotating assembly. Key specifications include an internal balance type and yes, this assembly comes balanced from the factory. The connecting rod bolt diameter is 3/8". The cylinder bore diameter is 4.030", and the piston pin diameter is .927" with a full floating type. Please note that minor clearancing of the block at the pan rails is required for installation.

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 NumberEAGB13057E030
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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