Bore size |
99.75mm |
Stroke |
79.00mm |
|
8.5:1 - 56cc cylinder head 9.1:1 - 50cc cylinder head |
OEM compression ratio (CR) |
8.0:1 |
Dome volume (CC) |
-19.25cm3 |
Compression height (CH) |
30.70mm |
Pin diameter |
23mm |
Fits for |
Subaru WRX STI 2.5 (EJ257) |