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BMW JE Pistons 2009+ N55B30 - ***Single Piston***

Price: $245.13

Select Size:

  • Bore
  • Engine Compression Ratio (CR)
  • Volume Dome CC
  • 84mm = 3.307in 9.5:1 -14.7
  • 84.50mm = 3.327in 9.5:1 -14.7

Weight: 0.01 lb

Sku: 338096S




More Description

  • Description

    • Dome/Dish requires no deburring or preparation
    • 2618 T6 high tensile forged aluminum
    • JE designs are specifically engineered for extreme applications up to, and including, professional competition. In this environment, the higher compression ratios, highest boost or heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy.
    • Dome and dishes feature smooth flowing radii for excellent flame travel.
    • 1.0 x 1.2 x 2.8mm ring widths.
    • .866 x 2.250 straight wall carbon steel wrist pin provided.
    • Pin fitting and wire locks included
    • Rings Now Included
  • Sizing Chart

    Part # Bore Oversize Stroke
    Head CC's C/R With .040 Dome CC's Gram Footnote Skirt Included
    Ring Set#
    338096 84 STD 89.6 145 32.4 37 9.5:1 -14.7
    T,M F
    338097 84.5 0.5 89.6 145 32.4 37 9.5:1 -14.7
    T,M F
  • Piston Specifications

    Top Compression Ring Thickness 0.0400
    Second Compression Ring Thickness 0.0480
    Oil Ring Thickness 0.111
    Forging Type FSR
    Series JE Pistons
    Piston Head Type Inv Dome/Dish
    Pin Diameter (IN) 0.866
    Compression Height 1.275
    Make BMW
    Wrist Pin Style - floating or press fit Floating
    Wall Type CHAMFERED
    Wall Thickness (IN) 0.150
    Ringset Part Number JG1001-3307-AL
    Ring Brand ProSeal
    Ringset Included Yes
    Retainer Thickness 0.063
    Retainer Lock Style Wire Lock
    Retainer Lock Part Number 866-063-MW
    Retainer Diameter (IN) 0.866
    Piston Pin Inside Diameter 0.566
    Piston Material 2618
    Piston Pin Length (IN) 2.250
    Pin Offset Yes
    Pin Brand JE Pistons
    Pin Part Number 866-2250-15-51C
    Pin Included Yes
    Pin Diameter (mm) 22.00
    Oil Rail Support Included No
    Deck Clearance 0.000
    Brand JE Pistons