3620311 Subaru EJ257 2.5L DOHC WRX STI 2004-UP, 100mm, 8.7:1

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Subaru EJ257 2.5L DOHC (+.5mm)
    WRX STI 2004 and up
Stock Bore: 3.9175, 99.5mm   Stroke: 3.110   Rod: 5.137   Head cc: 51.0   Gasket: .050   Deck: ~.012
Bore Comp. Dome Compression RatioComp. Gram Part Required
in/mm Height CC w/ Stock Head  Wt. Number Ring Set
Dish top           Turbo/Nitrous
3.937 / 100.00 1.208 -16 8.7 411 3620311 1215283937

 

Offset pin hole.