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Eagle Forged 4340 Steel Crankshaft 4.125" Stroke Chevrolet LS9 Corvette ZR1 2009-2013
$1138.99

If you're looking to upgrade your engine's heartbeat, the Eagle Forged 4340 Steel Crankshaft is a solid choice. This isn't just any crankshaft; it's built from tough 4340 steel and crafted using a non-twist forging process. That means it’s designed to handle some serious power without bending under pressure. The .125" fillet radiuses add to its strength, making it a reliable option for those high-performance builds. Just a heads up, you'll need to use chamfered or narrowed bearings with this one, but that’s a small price to pay for durability.

One of the standout features here is the nitrided surface that not only enhances wear resistance but also gives it a slick, micropolished finish. This crankshaft is built for the most demanding applications, so whether you're hitting the track or just pushing your ride to the limit on the street, this crank can take it.

Now, let’s talk specs. The crankshaft has an internal balance and a stroke of 4.125 inches, which is pretty standard for a performance setup. It comes with a target bobweight of around 1800g, so you know it’s designed to keep things smooth. The rod journal measures 2.100 inches wide and 1.900 inches in width, while the main journals sit at 2.559 inches. It’s also got a typical weight of about 59 lbs, which isn’t too heavy considering the strength you’re getting.

For those working on a Chevrolet Corvette ZR1 from 2009 to 2013, this crankshaft is a perfect fit. Just keep in mind that you'll need to balance it to match your specific rods and pistons to get the best performance out of it. The rear seal diameter and pilot bore diameter are something you'll want to check based on your setup, as those details can vary.

In short, if you’re serious about building a powerhouse engine, the Eagle Forged 4340 Steel Crankshaft is worth considering. It’s built tough, designed for performance, and ready to help you unleash the full potential of your ride.

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Vehicle Make/Model
Chevrolet Corvette 2009-2013 Base
Chevrolet Corvette 2011 Z06 Carbon
Chevrolet Corvette 2013 427

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Who is EAGLE?

EAGLE SPECIALTY PRODUCTS, aka EAGLE, has been at the forefront of developing top-quality engine components. The company officially started back in 1992 but has been developing their product for ten years prior.  Since the company started, it has continuously produced some of the market's best engine components and is widely used by engine builders worldwide.

Imitated But Not Duplicated

Due to the company's success, its products have been imitated by other companies even up to the part numbers. But the similarity ends only up to how they look. EAGLE uses the finest materials and has invested in the most state-of-the-art manufacturing machinery for them to create a product that would be able to take any punishment it is subjected to. It is tested to be superior to other brands and considered the best upgrade for OEM counterparts.

No To Shortcuts

The company sets the benchmark on how valves should be properly made. Using their years of experience creating rods, they have already designed over 200 different rods and 180 crankshafts. The company does not allow cost to compromise its material used, manufacturing process, and quality test. 

High-End Quality

All of Eagle's products are made up of high-quality materials. They use certified 4340 Chromoly steel. Using their own special heat treatment process, they are able to create a product that is much stronger compared to other competitors using the same raw material. 

They manufacture their rods using a 2-piece forging process that allows the rod to be stronger. This process orients the "grain" of the metal to the direction of the stress. Eagle uses a state-of-the-art Sunnen Krossgrinding system that allows them to create perfect cuts and bore consistently. 

Purchase EAGLE rods at Vivid Racing

If you want to upgrade your engine rods to something stronger and more reliable, then EAGLE is the brand for you. With their proven design and formula for creating rods, they have been sought after by top racing teams and engine builders. If they trust Eagle, so can you. Visit Vivid Racing and check out the list of parts specifically for your needs.

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