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SBC250030D11

• Bore (in): 4.030 in. Stroke 3.480″/3.500″
• Bore (mm): 102.362mm
• Piston Style: Dome, with two valve reliefs
• Piston Material: Forged aluminum
• Compression Distance (in): 1.250 in.
• Piston Head Volume (cc):-11.00cc
• Wrist Pin Style: Press-fit or floating
• Pin Diameter (in): 0.927 in.
• Gapless: No
• File Fit: Yes
• Top Ring Thickness: 1.5mm
• Top Ring Material: Ductile iron
• Top Ring Facing Material: Plasma-moly
• Second Ring Thickness: 1.5mm
• Second Ring Material: Cast iron
• Second Ring Facing Material: Cast iron
• Oil Ring Thickness: 3.0mm
• Oil Ring Material: Chrome plated carbon steel
• Oil Ring Tension: Standard

Mahle’s PowerPak piston assemblies include forged pistons, piston rings, pins, and wire locks–all in one race-proven package. The pistons are hand-deburred and then coated with dry phosphate to protect against ring micro-welding and pin galling during initial startup. For additional performance, Mahle added its proprietary Grafal anti-friction coating to the piston skirts. Low drag rings, steel pins, and round wire locks complete the Mahle PowerPak package.