Manley Ford EcoBoost 2.3 I Beam Rods – Mustang EcoBoost & Focus RS

Original price was: $826.20.Current price is: $784.89.

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When you need the ultimate piston for your Mustang EcoBoost or Focus RS, nothing else will suffice. Our EcoBoost 2.3 I Beam Rods withstand even the harshest racing conditions. These rods have seen hours of track testing and countless passing during their testing phase. We have yet to find the horsepower rating on these pistons but have used them on 9-second EcoBoost Mustang builds.

  • Forged from 4340 aircraft quality vacuum degassed material
  • Shot peened after machining to MIL spec and 100% individually magnafluxed
  • Specifically designed to handle high horsepower applications when using turbos and/or nitrous
  • 1,000+ horsepower capable

EcoBoost 2.3 I Beam Rods

Building the first 9-second EcoBoost takes a lot of dedication to perfection. These I-Beam pistons are an example of that dedication. When you’re building the ultimate race car, an I beam piston is the clear choice. I beams are the choice for unparalleled reliability. Additionally this construction style lends itself to repeatability on the track.

Manley EcoBoost 2.3 I Beam Rods Technical Data

cp-e™ has chosen Manley as its manufacturer of choice for Ecoboost 2.3L I-Beam Rods.  Manley’s I-beam connecting rods form from billet 4340 steel.  4340 steel is a heat treatable, low alloy steel containing nickel, chromium and molybdenum. Toughness and high strength are the main characteristics. Additionally the heat treated condition retains good fatigue strength.

Commonly used for applications such as aircraft landing gear, power transmission gears and shafts, connecting rods, and other structural parts. Shot peening treatment provides even more strength to the rod construction.  Shot peening is a cold working process that produces a compressive residual stress layer. Also this modifies the mechanical properties of the rods. It entails impacting a surface with shot (round metallic, glass or ceramic particles). The shot force is sufficient to create plastic deformation. Essentially cold working the surface.  Put simply, Shot peening can increase fatigue life by up to 1000%.

EcoBoost 2.3 I Beam Rods Materials

The materials and processing are closely monitored for optimum performance.  The rods are designed and finish honed in the USA with sizes held to some of the tightest tolerances in the industry, +/- .0001” and +/- 1 gram per end.  This important aspect is a must for a balanced rotating assembly.  The Manley I-beam connecting rods also exclusively use ARP 2000 fasteners.  From ARP’s site on ARP 2000 fasteners, “ARP2000 is a heavily alloyed martensitic quench and temper steel, initially developed for use in steam power plants. As such it has excellent stability at high temperatures.

But most important, ARP research discovered that in addition to temperature stability it has excellent notch toughness in the higher strength ranges and is alloyed to be tempered to Rc44/47. 8740 and 4340 can be tempered to the same hardness. But, the tempering temperature would yield material in the “temper brittle zone” (between 500° and 700°F), producing significant notch sensitivity. ARP2000 is tempered above that temperature range and has a strength between 200 and 220 Ksi.

cp-e™ offers a lifetime warranty on all cp-e™ products. Our warranty excludes non-cpe parts such as short blocks, cylinder heads, Cobb Accessports, etc.

Additional information

Weight 9 lbs
Dimensions 16 × 16 × 8 in


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