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Forged pistons EJ22 with EJ25 crankshaft, 2.35-2.4 L Subaru Forged pistons EJ22 with EJ25 crankshaft, 2.35-2.4 L Subaru

Forged pistons 2.4L 16v EJ22 with EJ25 crankshaft Subaru

€612.48 (tax incl.)
€874.97 (tax incl.) -30%

Forged pistons for Subaru EJ22 stroker + EJ25 crankshaft (79 mm stroke) — 97.5/98.0 mm bore, 8.5:1 compression ratio, 23 mm wrist pin. Compatible with Legacy/Impreza EJ22, OEM data and part numbers included.

WK602M975
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Specifications of the forged pistons offered by NSB Concept for installation stroker Subaru EJ22 (block 2.2 L) + crankshaft EJ25 (stroke 79 mm) :

these references are intended for blocks EJ22 rebored (97.50–98.00 mm) with connecting rod 131.6 mm and vilo EJ25 79 mm, in order to obtain ~2.35–2.4 L depending on bore.

Reference OEM Bore
96,90 mm (EJ22)		 OEM CR EJ22E 9,5–9,7 :1 · EJ22T/EJ22G ≈ 8,0–8,1 :1 OEM Pin
23 mm		 Height OEM Pin
≈ 32,70 mm		 Range Coating Aluminium Forging Dome Weight Rings
WK602M975 97.5 8.5:1 23 30.25 Wiseco Skirt 2618 NC -24.0 cc NC 9750VF
WK602M98 98.0 8.5:1 23 30.25 Wiseco Skirt 2618 NC -24.0 cc NC 9800VF


Compatibility (engine codes):

  • EJ22 — block 2.2 L 16v (NA/T depending on versions), installation with crankshaft EJ25 stroke 79 mm for config. stroker 2.35–2.4 L.


vehicles original equipped with a block EJ22 (compatibles for base stroker) :

Brand Model Engine code Power Years
Subaru Impreza 22B STi EJ22G 280 PS (206 kW) 1998
Subaru Impreza GC/GF 2.2 EJ22E 135–137 hp 1995 – 2001
Subaru Legacy I (BC/BF) 2.2 EJ22E 130 hp 1990 – 1994
Subaru Legacy I (BC/BF) 2.2 Turbo EJ22T 160 hp 1991 – 1994
Subaru Legacy II (BD/BG) 2.2 EJ22E 135–137 hp 1995 – 1999


OEM piston references :

  • Subaru EJ22E (NA, 1997–1998): 12006AA420 (STD grade A), 12006AA430 (STD grade B); other model years available in references equivalents depending on grade.
    Subaru EJ22T (Legacy Turbo 1991–1994): pistons specific turbo (ref. variables by grade/offset) — to be confirmed at the VIN at Subaru; Common original ring sets: 12033AA390/12033AA400.
    Subaru EJ22G (Impreza 22B 1998): pistons specific forged STI — manufacturer references to be confirmed at VIN (limited edition).

*Note: the OEM references vary by grade (A/B/C) and sometimes by side (LH/RH). Essential verification of the serial number.

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.

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