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S55 Billet connecting rod and Forged Piston set

Upgrade to high performance race ready internals, .002 Overbore.
Mfg Part #
ECS Part #
Availability: Ships on Jul 16, 2020
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Product Details

Billet Chromoly steel is the construction of these connecting rods, which gives them superior strength over stock parts. Usually referred to as "aircraft" or "aircraft-grade" steel, it boasts incredible tensile strength and superior uniformity. If you're increasing boost pressure this is a must-have upgrade. Forged aluminum was selected for the piston material due to its strength, popularity, and light-weight. Lateral gas ports ensure that the top ring seal is always as tight as possible and resist buildup more so than vertical ports do. Armor plating technology really makes these pistons shine. As with traditional coating technologies, heat causes the coating to wear off of the piston eventually to the point of no effectiveness. Armor Plating does not suffer the same effects. 

** These Pistons are .002 overbore. Please note that cylinder walls will require a light hone to ensure proper fit. **


  • Kit includes Pistons, connecting rods, wrist pins and rings
  • Skirt coating ensures smooth and trouble free break-in of the engine.

This Part Fits the Following Vehicles

Make Model Submodel Engine
BMW F80 M3 S55 3.0L
BMW F82 M4 S55 3.0L
BMW F83 M4 S55 3.0L
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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