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JE Pistons Subaru EJ25 Ultra Series Forged Piston Set - 100mm Bore -17.3cc 8.5:1 0.905in Pin

$1,124.99

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JE Pistons Subaru EJ25 Ultra Series Forged Piston Set - 100mm Bore -17.3cc 8.5:1 0.905in Pin

$1,124.99

$1,124.99

Fits Subaru EJ25 engines.

JE Pistons Ultra Series forged pistons are engineered for high-output Subaru EJ25 builds where extreme cylinder pressures are the norm. These pistons utilize JE’s proprietary Aligned Grain Flow technology, a specialized forging process that maximizes tensile strength to withstand the stresses of high-boost environments. Each piston comes standard with a ceramic-based thermal barrier crown coating to reflect heat into the combustion chamber and a friction-reducing skirt coating to minimize wear and cold-start noise.

  • Bore Diameter: 100mm
  • Piston Volume: -17.3cc
  • Compression Ratio: 8.5:1
  • Wrist Pin: 0.905in premium thick-wall by Trend Performance
  • Aligned Grain Flow forging for maximum tensile strength
  • Lateral gas ports for superior ring seal under high boost and RPM
  • Thermal barrier crown coating improves exhaust gas scavenging
  • Skirt coating reduces friction and cylinder wall wear
  • Optimized pin oiling for reduced heat and friction
  • 100% Made in the USA
  • Manufacturer Part Number: 361329

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