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  • Subaru JE Pistons 2004+ IMPREZA STI , 2005+ FORESTER XT, LEGACY GT, 2006+ WRX EJ257 - Piston Kit
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Subaru JE Pistons 2004+ IMPREZA STI , 2005+ FORESTER XT, LEGACY GT, 2006+ WRX EJ257 - Piston Kit

Price: $894.72

Select Size:

  • Bore
  • Engine Compression Ratio (CR)
  • Volume Dome CC
  • 99.50mm = 3.917in 8.5:1 -16.5
  • 99.50mm = 3.917in 9.5:1 -7
  • 99.75mm = 3.927in 8.5:1 -16.9
  • 99.75mm = 3.927in 9.5:1 -7.3
  • 100.0mm = 3.937in 8.5:1 -17.3
  • 100.0mm = 3.937in 9.5:1 -7.6

Weight: 0.01 lb

Sku: 361327

Weight:

SKU:



$894.72

  • Time Attack FSR Pistons now available!
  • 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.
  • 1.2 x 1.2 x 2.5mm ring widths.
  • .905 x 2.250 straight wall carbon steel wrist pin provided.
  • Pin fitting and Tru Arc locks included
  • Rings Now Included


 

Part # Bore Oversize Stroke
(mm)		 Rod
(mm)		 C/D
(mm)		 Head CCs C/R With .040 Dome CCs Gram Footnote Skirt Included
Ring Set#
361327 99.5 STD 79 130.5 30.7 57 8.5:1 -16.5 425 ULTRA F JG4904-3917
361330 99.5 STD 79 130.5 30.7 57 9.5:1 -7 426 ULTRA F JG4904-3917
361328 99.75 0.25 79 130.5 30.7 57 8.5:1 -16.9 427 ULTRA F JG4904-3927
361331 99.75 0.25 79 130.5 30.7 57 9.5:1 -7.3 428 ULTRA F JG4904-3927
361329 100 0.5 79 130.5 30.7 57 8.5:1 -17.3 430 ULTRA F JG4904-3937
361332 100 0.5 79 130.5 30.7 57 9.5:1 -7.6 430 ULTRA F JG4904-3937

 

 

Top Compression Ring Thickness 0.0475
Second Compression Ring Thickness 0.0480
Oil Ring Thickness 0.100
Forging Type FSR
Series JE Ultra Series
Piston Head Type Inv Dome/Dish
Pin Diameter (IN) 0.905
Make SUBARU
Wrist Pin Style - floating or press fit Floating
Wall Type STRAIGHT
Wall Thickness (IN) 0.210
Ringset Part Number JG4901-3917
Ring Brand ProSeal
Ringset Included Yes
Retainer Thickness 0.042
Retainer Lock Style Tru Arc Lock
Retainer Lock Part Number 905-042-CT
Retainer Diameter (IN) 0.905
Piston Pin Inside Diameter 0.485
Piston Material 2618
Piston Pin Length (IN) 2.250
Piston Avg Wt 425
Pin Offset Yes
Pin Brand JE Pistons
Pin Part Number 905-2250-21-93S
Pin Included Yes
Pin Diameter (mm) 23.00
Oil Rail Support Included No
Deck Clearance -0.012
Brand JE Pistons