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2.0L 16v - EJ20
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2.0L 16v - EJ20
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Forged piston chart for Subaru EJ20 stroked 2.1L (EJ25 79mm crankshaft, 131.6mm connecting rods): Ø 92.00 mm, pin 23 mm, CH 33.50 mm, RV 8.0–9.0:1. Compatibility, vehicles and OEM part numbers.
Specifications of the forged pistons offered by NSB Concept for Subaru EJ20 stroked 2.1 L — crankshaft EJ25 (79 mm) and connecting rods 131,6 mm :
| Reference | OEM Bore 92,00 mm | OEM CR 8,0–9,0 :1 | OEM Pin 23 mm | Height OEM Pin 33,50 mm | Range | Coating | Aluminium | Forging | Dome | Weight | Rings |
|---|---|---|---|---|---|---|---|---|---|---|---|
| WK579M925 | 92.5 | 8.5:1 | 23 | 30 | Wiseco | Skirt | 2618 | NC | -17.8 | NC | 9250TX |
| WK579M93 | 93.0 | 8.5:1 | 23 | 30 | Wiseco | Skirt | 2618 | NC | -17.8 | NC | 9300TX |
Compatibility (engine codes):
vehicles original equipped the engines EJ20 2.0 16v (technical base of the stroker 2.1 L):
| Brand | Model | Engine code | Power | Years |
|---|---|---|---|---|
| Subaru | Forester S/tb (SF5) 2.0 Turbo | EJ20G/EJ205 | 170–250 hp | 1997 – 2002 |
| Subaru | Forester XT (SG5) 2.0 Turbo (EU/JDM) | EJ205 | 220–230 hp | 2002 – 2007 |
| Subaru | Impreza WRX (GD/GG) 2.0 Turbo | EJ205 | 227 hp | 2002 – 2005 |
| Subaru | Impreza WRX STI (GC8/GDB) | EJ207 | 280 hp (JDM) | 1998 – 2005 |
| Subaru | Legacy B4/GT-B (BE/BH) bi-turbo | EJ206/EJ208 | 260–280 hp | 1998 – 2003 |
| Subaru | Legacy GT/GT-B (BD/BG) bi-turbo | EJ20H/EJ20R | 250–280 hp | 1993 – 1998 |
OEM piston references :
Subaru EJ205/EJ207 (Ø 92): OEM piston references vary depending on version/year (e.g. WRX EJ205, WRX STi EJ207). Consult EPC Subaru (FAST) via VIN for 12006-**** and deriveds.
Original dimensional markers: Ø 92.00 mm — pin Ø 23.00 mm — CH ~33.5 mm; crankshaft EJ25 79 mm used for the increase to 2.1 L (stroker).
the OEM references complete differ depending on markets (JDM/EU/US), model years and sort classes. Verification by VIN mandatory.
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.
