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JE PISTONS

JE Pistons 399155 Piston Kit for 4.255-inch Bore and 4.375-inch Stroke Engines

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SKU: 09107013
Piston Kit - 4.255" Bore - 4.375" Stroke - 11.5:1 CR - 107" M8 Upgrade your high-performance engine with the JE Pistons 399155 piston kit, designed for precise …

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UPC: 193564567598
$499.95
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JE Pistons 399155 Piston Kit for 4.255-inch Bore and 4.375-inch Stroke Engines

$499.95
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JE Pistons 399155 Piston Kit for 4.255-inch Bore and 4.375-inch Stroke Engines

$499.95
Piston Kit - 4.255" Bore - 4.375" Stroke - 11.5:1 CR - 107" M8

Upgrade your high-performance engine with the JE Pistons 399155 piston kit, designed for precise fit and enhanced durability. Crafted from 2618-T6 forged aluminum, these pistons offer superior grain flow alignment and increased tensile strength, making them ideal for demanding applications where reliability is critical. The forged construction ensures consistent performance under high stress, providing longevity for motorsport and street performance builds alike.
The piston features a skirt coating that reduces operating friction and wear, helping to maintain optimal engine efficiency over time. Offset pins are incorporated to minimize piston rock and operating noise, resulting in smoother engine operation and quieter performance. Notches on the skirt allow for optimal clearance at bottom dead center, preventing interference during piston travel.
An accumulator groove is included to tap into combustion gases below the top ring, promoting a more positive and consistent ring seal for improved compression and power output. This kit comes complete with two pistons, premium ring packs, wrist pins, and wire locks, providing everything needed for a comprehensive upgrade. Made in the USA, the JE Pistons 399155 ensures quality and performance for your engine rebuild or upgrade. Whether building a high-performance street engine or a race motor, these pistons deliver the strength and precision necessary for optimal engine operation.

Features:

  • Forged 2618-T6 aluminum construction for strength and durability
  • Skirt coating reduces friction and wear for longer engine life
  • Offset pins minimize piston rock and reduce operating noise
  • Notches on skirt allow optimal clearance at bottom dead center
  • Accumulator groove enhances ring seal for consistent compression

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