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Professional Series Forged Piston for BMW M50B25 2.5L 24V, 84.25 mm Bore, 1.5039 in. Compression Height, -1.5cc Dish
InfoVehicle Info Needed
WISECOPART NUMBER: 926-6664M8425

Professional Series Forged Piston for BMW M50B25 2.5L 24V, 84.25 mm Bore, 1.5039 in. Compression Height, -1.5cc Dish

$16799
ShippingShips on 11/13/2026
Lowest PriceLowest Price Guarantee

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Forged Piston
  • BMW M50B25 2.5L 24V
  • 84.25 mm Bore
  • 1.5039 in. Compression Height
  • -1.5cc Dish
  • 0.8661 in. Floating Wrist Pin Included
  • Piston Rings Included
  • 2618 Forged Aluminum
  • ArmorGlide Coated Skirt
  • Sold Individually

    This Wiseco Professional Series piston is forged from 2618 aluminum for BMW M50B25 2.5L 24V engines. It has an 84.25 mm bore and a 1.5039 in. compression height with a -1.5cc dish. Professional Series pistons are aimed at heavy to severe duty race builds.

    Wiseco 6664M8425 Piston Features:

    • Made for BMW M50B25 2.5L 24V engines
    • 84.25 mm bore diameter with a 1.5039 in. compression height
    • -1.5cc dish volume
    • Forged from 2618 aluminum alloy
    • ArmorGlide skirt coating for reduced friction, scuff resistance and quieter operation
    • 0.8661 in. 5115 Steel floating wrist pin included
    • Piston rings included: 1 mm top, 1.2 mm second and 3 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
    • Part TypePiston
    BrandWISECO
    Package Height4.2
    Package Width4.7
    Package Length4.7
    Weight1.0 PG
    Part CategoryPerformance Parts
    Compression Height1.5039 in.
    Piston Head TypeDish
    Wrist Pin StyleFloating
    QuantitySold Individually
    Oil Ring Thickness3 mm
    Piston Head Volume-1.5cc
    Piston Pin Outside Diameter0.8661 in.
    Second Compression Ring Thickness1.2 mm
    Top Compression Ring Thickness1 mm
    Piston Material2618 Aluminum
    Cylinder Bore Diameter84.25 mm
    Part FitmentUniversal
    Wrist Pin IncludedYes
    Piston Pin Material5115 Steel
    Vendor Part Number6664M8425
    Package Qty1
    Package TypeEA
    Some parts are not legal for use in California or other states with similar laws / regulations
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