Subaru WRX STI 2.5 EJ257 Mahle pistons 99.50mm CR 9.0 930285217

Bore size

99.50mm

Stroke

79.00mm

Mahle compression ratio (CR)

9.0:1 - 56cc cylinder head

9.6:1 - 50cc cylinder head

OEM compression ratio (CR)

8.0:1

Dome volume (CC)

-14.1cm³

Compression height (CH)

30.70mm

Pin diameter

23mm

Fits for

Subaru WRX STI 2.5 (EJ257)