This Wiseco Professional Series piston is forged from 2618 aluminum for BMW M50B25 2.5L 24V engines. It has an 84.50 mm bore and a 38.20 mm compression height with a -1.5cc dish. Professional Series pistons are aimed at heavy to severe duty race builds.

Wiseco 6664M845AP Piston Features:

• Made for BMW M50B25 2.5L 24V engines
• 84.50 mm bore diameter with a 38.20 mm compression height
• -1.5cc dish volume
• Forged from 2618 aluminum alloy with a strutted forging design
• ArmorGlide skirt coating for reduced friction, scuff resistance and quieter operation
• 0.866 in. 5115 Steel floating wrist pin included
• Piston rings included: 1.0 mm top, 1.2 mm second and 2.8 mm oil ring
• Fully machined crown with precision ring grooves and an anti-detonation groove
• Forced pin oiling feeds the wrist pin bore
• Sold individually