£1,337.74
Impreza WRX STI 2.5 16v Fast Road Forged Piston & H-Beam Steel Con Rod Package.
Manufacturer kit reference: K9550/G0012
| Engine Code | EJ257 |
|---|---|
| YOM From | 2004 |
| YOM To | 2008 |
| Bore Size | 100.5mm – K9550D100 , 100mm – K9550D050 , 99.5mm – K9550DA , 99.75mm – K9550D025 |
| Stroke | 79mm |
| Compression Height | 30.7mm |
| OEM Comp Ratio | 8.4:1 |
| Number of Rings | 3 |
| OEM Rod Length | 130.5mm |
| Clip Part Number | CA23 |
| Pin Size | 23mm |
| Pin Part Number | WP024 |
| Cylinders | 4 |
| Valves Per Cylinder | 4 |
| Suits Wossner Con Rod | G0012 |
| Con Rod Length C/C | 130.5mm |
| Engine Code | EJ20 & EJ25 |
|---|---|
| Con Rod Length C/C | 130.5mm |
| Con Rod Big End Dia | 55mm |
| Con Rod Big End Width | 21.425mm |
| Con Rod Small End Dia | 23mm |
| Con Rod Small End Width | 15.50mm T |
| Con Rod Bolt | 3/8" |
| Piston reference | Piston diameter | Compression ratio | Capacity |
|---|---|---|---|
| K9550DA | 99.42mm | 8.92:1 | 2457cc |
| K9550D025 | 99.67mm | 8.96:1 | 2469cc |
| K9550D050 | 99.92mm | 9.0:1 | 2481cc |
| K9550D100 | 100.42mm | 9.07:1 | 2506cc |
Piston diameter and cylinder bore are different measurements. Select the correct size and confirm the engine specification before ordering.