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SUBARU 2004+ IMPREZA STI , 2005+ FORESTER XT, LEGACY GT, 2006+ WRX EJ257

  • 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
SUBARU EJ257 TIME ATTACK "FSR"
NOTE: Standard Stroke Series now compatible with either OEM or aftermarket rods!


Click here to see matching JE Pro Seal Head Gaskets!
Part # Bore Oversize Stroke
(mm)
Rod
(mm)
C/D
(mm)
Head CC's C/R With .040 Dome CC's Gram Footnote Skirt Included
Ring Set#
291061 99.5 STD 79 130.5 30.7 57.0 8.5:1 -16.5 407 T F JG4904-3917
310936 99.5 STD 79 130.5 30.7 57.0 9.5:1 -7.0 423 T,M F JG4904-3917
296348 99.75 0.25 79 130.5 30.7 57.0 8.5:1 -17.0 405 T F JG4904-3927
310937 99.75 0.25 79 130.5 30.7 57.0 9.5:1 -7.3 425 T F JG4904-3927
291062 100 0.50 79 130.5 30.7 57.0 8.5:1 -17.3 413 T F JG4904-3937
310938 100 0.50 79 130.5 30.7 57.0 9.5:1 -7.6 427 T,M F JG4904-3937


SUBARU EJ257 TIME ATTACK "FSR" STROKER SERIES
NOTE: Stroker Pistons not compatible with OEM Rods. OEM Rods must be milled above pin end to clearn undercrown of piston.
Some Blocks may require clearancing for stroker applications.

Click here to see matching JE Pro Seal Head Gaskets!
Part # Bore Oversize Stroke
(mm)
Rod
(mm)
C/D
(mm)
Head CC's C/R With .040 Dome CC's Gram Footnote Skirt Included
Ring Set#
291063 99.5 STD 83 130.5 28.7 57 8.5:1 -20.7 398 T F JG4904-3917
296352 99.75 0.25 83 130.5 28.7 57 8.5:1 -21.1 401 T,M F JG4904-3927
291064 100.0 0.50 83 130.5 28.7 57 8.5:1 -21.5 404 T F JG4904-3937

- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.


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