If you're on the hunt for a crankshaft that can handle the heat of serious performance, look no further than the Eagle Forged 4340 Steel Center-Counterweighted Crank. This isn't just any crank; it's built from 4340 forged steel, which means it's tough as nails and ready to take on whatever you throw at it. The non-twist forging and center counterweights really shine when you're pushing high RPMs and demanding power levels. Trust me, stability is key, and this crank delivers.
One of the standout features is the 1.25" fillet radiuses, which give it superior strength. You'll want to pair it with chamfered or narrowed bearings, but once you do, you'll notice the difference. The nitrided surface and micropolished finish are nice touches that help reduce friction and wear, making this crankshaft ideal for those high-performance applications where every bit of horsepower counts.
Let’s talk specs for a moment. It has an internal balance and a target bobweight of 1680g, which is pretty spot-on for performance setups. With a stroke of 3.750" and rod journals measuring 2.000" wide and 1.900" in width, this crank is designed with precision in mind. The main journals are 2.657", and it typically weighs around 47 lbs. If you’re curious about the rear seal and snout diameter, you’ll need to check with your setup, as those can vary.
This crankshaft is a perfect fit for a few popular models: if you own a Ford F-150 from 2011 to 2023, a Ford Mustang GT from 2011 to 2023, or a Ford Falcon from 2011 to 2016, you’re in luck. Just keep in mind that balancing the crankshaft is essential to match your specific rods and pistons, so don't skip that step.
In short, if you’re serious about building a performance engine that can take the heat and push the limits, the Eagle Forged 4340 Crankshaft is a solid choice. It’s built for the most demanding applications, and you can feel the quality the moment you hold it in your hands.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2011-2023 Ford F-150 |
F-150 | 2011-2023 |
|
2011-2023 Ford Mustang GT |
Mustang GT | 2011-2023 |

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 DuplicatedDue 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 ShortcutsThe 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 QualityAll 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 RacingIf 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.