Je Pistons 394138 Piston Kit - 4.250" - 10.25:1 CR - 114"/117" M8

Features

• Propriety aligned grain flow forging technology for maximum tensile strength suited for high performance enviroment
• Cermic crown coating protects the piston by reducing heat transfer
• Internal and external bracing maintains optimized strength-to-weight ratio for longevity
• 3D undercrown milling in non-critical areas reduces overall weight
• Lateral gas ports and accumulator groove maintain power-producing ring seal even at high RPM and high boost
• Tuff Skirt is a propriety, moly based dry film skirt coating that is applied in-house and reduces operating friction for better wear resistance
• Offset pin reduces piston rock and minimize engine operating noise
• Skirt notches for optimal clearance at the bottom dead center
• Kit includes two pistons, premium ring pack, wrist pins and wire locks