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2.5L 16v - EJ255
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2.5L 16v - EJ255
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Forged pistons for Subaru EJ255/EJ257 2.6L (83mm crankshaft). Bore chart 99.5–100.0, compression ratio 8.5:1/9.8:1, 23mm wrist pin, 4032/2618 alloys, JE FSR & Manley. OEM compatibility information.
Specifications of the forged pistons offered by NSB Concept for Subaru EJ255 / EJ257 stroker 2.6 L (crankshaft 83,0 mm on base EJ25) :
| Reference | OEM Bore 99,50 mm | OEM CR 8,2–8,4 :1 | OEM Pin 23 mm | Height OEM Pin 30,24 mm | Range | Coating | Aluminium | Forging | Dome | Weight | Rings |
|---|---|---|---|---|---|---|---|---|---|---|---|
| JE-291063 | 99.5 | 8.5:1 | 23.0 | 28.7 | JE FSR | NC | 2618 | FSR | -20.7 | 395 | NC |
| 622000C-4 | 99.5 | 8.5:1 | NC | 28.7 | Manley | Skirt | 4032 | NC | -26.0 | 379 | NC |
| 632400C-4 | 99.5 | 8.5:1 | NC | 28.7 | Manley | Skirt | 4032 | NC | -26.0 | 389 | NC |
| 632400CE-4 | 99.5 | 8.5:1 | NC | 28.7 | Manley HD | Skirt | 2618 | NC | -26.0 | 389 | NC |
| 632500C-4 | 99.5 | 9.8:1 | NC | 28.7 | Manley | Skirt | 4032 | NC | -14.0 | 424 | NC |
| 632500CE-4 | 99.5 | 9.8:1 | NC | 28.7 | Manley HD | Skirt | 2618 | NC | -14.0 | 424 | NC |
| JE-296352 | 99.75 | 8.5:1 | 23.0 | 28.7 | JE FSR | NC | 2618 | FSR | -21.1 | 391 | NC |
| 622002C-4 | 99.75 | 8.5:1 | NC | 28.7 | Manley | Skirt | 4032 | NC | -26.0 | 383 | NC |
| 632402C-4 | 99.75 | 8.5:1 | NC | 28.7 | Manley | Skirt | 4032 | NC | -26.0 | 393 | NC |
| 632402CE-4 | 99.75 | 8.5:1 | NC | 28.7 | Manley HD | Skirt | 2618 | NC | -26.0 | 393 | NC |
| 622102C-4 | 99.75 | 9.8:1 | NC | 28.7 | Manley | Skirt | 4032 | NC | -14.0 | 415 | NC |
| 632502C-4 | 99.75 | 9.8:1 | NC | 28.7 | Manley | Skirt | 4032 | NC | -14.0 | 425 | NC |
| 632502CE-4 | 99.75 | 9.8:1 | NC | 28.7 | Manley HD | Skirt | 2618 | NC | -14.0 | 425 | NC |
| JE-291064 | 100.0 | 8.5:1 | 23.0 | 28.7 | JE FSR | NC | 2618 | FSR | -21.5 | 396 | NC |
| 622005C-4 | 100.0 | 8.5:1 | NC | 28.7 | Manley | Skirt | 4032 | NC | -26.0 | 386 | NC |
| 632405C-4 | 100.0 | 8.5:1 | NC | 28.7 | Manley | Skirt | 4032 | NC | -26.0 | 396 | NC |
| 632405CE-4 | 100.0 | 8.5:1 | NC | 28.7 | Manley HD | Skirt | 2618 | NC | -26.0 | 396 | NC |
| 622105C-4 | 100.0 | 9.8:1 | NC | 28.7 | Manley | Skirt | 4032 | NC | -14.0 | 418 | NC |
| 632505C-4 | 100.0 | 9.8:1 | NC | 28.7 | Manley | Skirt | 4032 | NC | -14.0 | 428 | NC |
| 632505CE-4 | 100.0 | 9.8:1 | NC | 28.7 | Manley HD | Skirt | 2618 | NC | -14.0 | 428 | NC |
Compatibility (engine codes):
vehicles original equipped EJ255 / EJ257 :
| Brand | Model | Engine code | Power | Years |
|---|---|---|---|---|
| Saab | 9-2X Aero | EJ255 | 230 hp | 2006 |
| Subaru | Forester XT (SG) | EJ255 | 210 hp | 2004–2005 |
| Subaru | Forester XT (SH) | EJ255 | 224 hp | 2009–2013 |
| Subaru | Forester XT (SG) | EJ255 | 230 hp | 2006–2008 |
| Subaru | Impreza WRX (GD facelift) | EJ255 | 230 hp | 2006–2007 |
| Subaru | Impreza WRX (GE/GH) | EJ255 | 265 hp | 2009–2014 |
| Subaru | Legacy BL/BP 2.5GT | EJ255 | 256 hp | 2005–2006 |
| Subaru | Outback BP XT | EJ255 | 256 hp | 2005–2006 |
| Subaru | Outback BP XT | EJ255 | 250 hp | 2007–2009 |
| Subaru | WRX STI (GD) | EJ257 | 300 hp | 2004–2007 |
| Subaru | WRX STI (GR/GV) | EJ257 | 305 hp | 2008–2018 |
| Subaru | WRX STI (VA) | EJ257 | 310 hp | 2019–2021 |
OEM piston references :
Warning: Before installation, please verify the integrity and conformity of each component of the piston kit as well as the correctness of the assembly in the engine; any warranty is strictly limited to the parts included in the piston kit.
