Engines and Components› Engines, Blocks and Components

Eagle

Rotating Assembly Kit 4.000" Stroke Internal Balance

$2,399.95

SKU: 6203-SRP

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Overview

The Eagle 6203-SRP is an engine rotating assembly kit designed for Chevy LS engines. It features a 4.000-inch stroke, 4140 forged steel crankshaft and 6.125-inch I-beam rods. This kit includes SRP Professional series pistons and is internally balanced.
Show original supplier description
The Eagle 6203-SRP is an internally balanced engine rotating assembly kit engineered for high-performance street builds, specifically for Chevy LS engines. This kit is built around a robust 4.000-inch stroke Eagle 4140 forged steel crankshaft and Eagle 6.125-inch I-beam connecting rods, which come equipped with 7/16" ARP 8740 rod bolts. The assembly includes SRP Professional series pistons with a -5cc dish, designed to achieve a 11.6:1 compression ratio with 66cc cylinder heads. This rotating assembly is designed to support up to 1000 horsepower, with the ARP2000 bolt upgrade enabling it to handle up to a 250 shot of nitrous or 15 pounds of boost. The kit comes complete with performance series rings and bearings, ready for assembly. The product page notes that the image is a representation and the actual item may vary. Various bore sizes and reluctor options are available as upgrades.

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

BrandEagle
Part Number6203-SRP
CategoryEngines and Components
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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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