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Manley Platinum Series Forged Pistons for Subaru EJ255/EJ257 99.55mm, 8.5:1 CR

Manley Platinum Series Forged Pistons for Subaru EJ255/EJ257 99.55mm, 8.5:1 CR
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Manley Platinum Series Forged Pistons for Subaru EJ255/EJ257 99.55mm, 8.5:1 CR
List Price: $678.96
Our Price: $611.06
You save $67.90!


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Product Code: MANLEY-612001C-4

Description
 
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Manley Platinum Series Forged Pistons for Subaru EJ255/EJ257 99.55mm, 8.5:1 CR

Manley Plainum Series Pistons for the 2004-2016 Subaru 2.5 liter, DOHC EJ255/EJ257 motor are designed to withstand the high stress and pressures of racing applications. The pistons are machined from high strength 2618 forgings. Each design is lightweight yet robust enough to deliver long service life. Perfect ring groove to skirt squareness is achieved through Manley's unique "one fixturing" manufacturing method that assures maximum horsepower. Round wire locks, tool steel wrist pins, and rings are included with every set at no additional charge. The 99.55mm bore with 8.5:1 compression ratio is best suited for blocks in near condition only requiring a hone being used for upgraded turbocharger running medium to high boost levels.

Product specifications
Bore Size Rod Length Stroke Compression Height Dome Volume Compression Ratio Weight
99.55mm STD 130.48mm 79mm 30.7086mm -22cc 8.5:1 (EJ257) / 9.1:1 (EJ255) 395g
Features
  • "Contour forgings" provide the optimum balance between strength and weight with no grain-interrupting internal milling.
  • Proprietary multi-step top ring groove machining process assures optimum control of the groove's size, geometry, flatness, and finish.
  • All final turning is performed in one fixturing resulting in complete squareness of rings to the cylinder wall.
  • Federal Form-Scan gauging validates ideal skirt indexing to pinhole and skirt-to-skirt polarity.
  • Value - added features such as a pressure balance groove included in all series.
  • Precise pinhole machining results in an exact compression distance as well as precise lock ring groove spacing, size, and concentricity.

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