Engine Internals – Subaru EJ20 / EJ25

The Subaru EJ20 and EJ25 engines are iconic powerplants used in performance models like the WRX and STI. Known for their turbocharged flat-four layout, they offer great tuning potential—but demand strong internals when pushing the limits.

At Chicane Australia, we offer a complete range of engine internals for EJ20 and EJ25 engines including forged pistons, H-beam and I-beam rods, race-spec bearings, multi-layer steel head gaskets, and valvetrain components optimised for high-RPM and high-boost applications.

Choose from trusted brands like CP Carrillo, ACL, ARP, Cometic, GSC Power Division, and Supertech—proven in street, rally, and time attack builds worldwide.

Upgrade your EJ build with confidence using the best internals available in Australia.

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Mahle PowerPak Forged Pistons 92.50mm – Subaru EJ20 2.2L Stroker (8.2:1 CR) - Chicane Australia
Mahle
Mahle PowerPak Forged Pistons 92.50mm – Subaru EJ20 2.2L Stroker (8.2:1 CR)

SKU: 929928142

$1,499.00
Available to Order
ARP CUSTOM AGE 625+ CYLINDER HEAD STUD KIT Subaru WRX/STI/Forester/Liberty (EJ20/EJ25) - Chicane Australia
ARP
ARP CUSTOM AGE 625+ CYLINDER HEAD STUD KIT Subaru WRX/STI/Forester/Liberty (EJ20/EJ25)

SKU: 260-4704

$1,299.00
Available to Order
HKS Fine Tune Timing Belt – Subaru WRX, STI, Forester XT, Liberty GT (EJ20/EJ25) - Chicane Australia HKS Fine Tune Timing Belt – Subaru WRX, STI, Forester XT, Liberty GT (EJ20/EJ25) - Chicane Australia
HKS
HKS Fine Tune Timing Belt – Subaru WRX, STI, Forester XT, Liberty GT (EJ20/EJ25)

SKU: 24999-AF001

$399.00
Available to Order
King Racing Connecting Rod Bearing Set – Subaru EJ20 / EJ22 / EJ25 (Incl. Turbo) - Chicane Australia King Racing Connecting Rod Bearing Set – Subaru EJ20 / EJ22 / EJ25 (Incl. Turbo) - Chicane Australia
King Racing Bearings
King Racing Connecting Rod Bearing Set – Subaru EJ20 / EJ22 / EJ25 (Incl. Turbo)

SKU: CR4125XPG

$89.00
Available to Order
King Racing Main Bearing Set – Subaru EJ20 / EJ22 / EJ25 (Incl. Turbo) - Chicane Australia King Racing Main Bearing Set – Subaru EJ20 / EJ22 / EJ25 (Incl. Turbo) - Chicane Australia
King Racing Bearings
King Racing Main Bearing Set – Subaru EJ20 / EJ22 / EJ25 (Incl. Turbo)

SKU: MB5382XPG

$179.00
Available to Order
HKS Oil Filter – M20x1.5 – Honda Civic Type R FK8/FL5 & Subaru WRX/STI - Chicane Australia
HKS
HKS Oil Filter – M20x1.5 – Honda Civic Type R FK8/FL5 & Subaru WRX/STI

SKU: 52009-AK005

$39.00
In Stock
ARP 2000 Cylinder Head Stud Kit – Subaru WRX, STI, Forester XT, Liberty GT (EJ20/EJ25) - Chicane Australia
ARP
ARP 2000 Cylinder Head Stud Kit – Subaru WRX, STI, Forester XT, Liberty GT (EJ20/EJ25)

SKU: 260-4701

$599.00
Available to Order
CP Pistons Forged Pistons (Stroker) – Subaru EJ257 - Chicane Australia
CP Pistons
CP Pistons Forged Pistons (Stroker) – Subaru EJ257

SKU: SC7433

$1,799.00
Available to Order
CP Pistons Forged Pistons (Stroker) – Subaru EJ257 - Chicane Australia
CP Pistons
CP Pistons Forged Pistons – Subaru EJ20 / EJ205

SKU: SC7399

$1,799.00
Available to Order
CP Pistons Forged Pistons (Stroker) – Subaru EJ257 - Chicane Australia
CP Pistons
CP Pistons Forged Pistons – Subaru EJ257

SKU: SC7420

From $1,639.00
Available to Order
ACL Race Conrod Bearings Set – Subaru EJ20/EJ22/EJ25 (52mm Journal) - Chicane Australia ACL Race Conrod Bearings Set – Subaru EJ20/EJ22/EJ25 (52mm Journal) - Chicane Australia
ACL
ACL Race Conrod Bearings Set – Subaru EJ20/EJ22/EJ25 (52mm Journal)

SKU: 4B8296H-STD

$85.00
Available to Order
ACL Race Main Bearings Set – Subaru EJ20/EJ22/EJ25 (Thrust Position 5) - Chicane Australia ACL Race Main Bearings Set – Subaru EJ20/EJ22/EJ25 (Thrust Position 5) - Chicane Australia
ACL
ACL Race Main Bearings Set – Subaru EJ20/EJ22/EJ25 (Thrust Position 5)

SKU: 5M8309H-STD

$179.00
Available to Order
Ferrea Intake Valves – Subaru EJ20/EJ25 - Chicane Australia Ferrea Intake Valves – Subaru EJ20/EJ25 - Chicane Australia
Ferrea
Ferrea Intake Valves – Subaru EJ20/EJ25

SKU: F1967-8

$575.00
Available to Order
Ferrea Exhaust Valves – Subaru EJ20/EJ25 - Chicane Australia Ferrea Exhaust Valves – Subaru EJ20/EJ25 - Chicane Australia
Ferrea
Ferrea Exhaust Valves – Subaru EJ20/EJ25

SKU: F1968P-8

$799.00
Available to Order
Supertech Valve Guides – Exhaust – Subaru EJ20/EJ25 - Chicane Australia
Supertech
Supertech Valve Guides – Exhaust – Subaru EJ20/EJ25

SKU: GDE-SUEJ6-E-8

$129.00
Available to Order
Supertech Valve Guides – Intake – Subaru EJ20/EJ25 - Chicane Australia
Supertech
Supertech Valve Guides – Intake – Subaru EJ20/EJ25

SKU: GDE-SUEJ6-I-8

$129.00
Available to Order
Supertech Valve Keeper – Subaru EJ20/EJ25 - Chicane Australia
Supertech
Supertech Valve Keeper – Subaru EJ20/EJ25

SKU: KPR-6T-ST-16

$95.00
Available to Order
Supertech Valve Stem Seals – Intake – Subaru EJ20/EJ25 - Chicane Australia
Supertech
Supertech Valve Stem Seals – Intake – Subaru EJ20/EJ25

SKU: VS-TS6I-8

$13.00
Available to Order
Supertech Valve Stem Seals – Exhaust – Subaru EJ20/EJ25 - Chicane Australia
Supertech
Supertech Valve Stem Seals – Exhaust – Subaru EJ20/EJ25

SKU: VS-TS6E-8

$16.00
Available to Order
Supertech Exhaust Valves 32mm – Subaru EJ20/EJ25 - Chicane Australia
Supertech
Supertech Exhaust Valves 32mm – Subaru EJ20/EJ25

SKU: SEVI-1010-8

$609.00
Available to Order
Supertech Intake Valves 32mm – Subaru EJ20/EJ25 - Chicane Australia
Supertech
Supertech Intake Valves 32mm – Subaru EJ20/EJ25

SKU: SEVN-1010-8

$375.00
Available to Order
Manley H Beam Connecting Rods – Subaru EJ20/EJ25 - Chicane Australia
Manley
Manley H Beam Connecting Rods – Subaru EJ20/EJ25

SKU: 14024-4

From $1,119.00
Available to Order
Manley H Beam Connecting Rods – Subaru EJ20/EJ25 - Chicane Australia
Manley
Manley I Beam Connecting Rods – Subaru EJ20/EJ25

SKU: 14416-4

$2,299.00
Available to Order
GSC Power-Division Valve Keeper Set – Subaru EJ20/EJ25 - Chicane Australia
GSC Power Division
GSC Power-Division Valve Keeper Set – Subaru EJ20/EJ25

SKU: GSC1006

$72.00
Available to Order
GSC Power-Division Valve Stem Seals – Subaru EJ20/EJ25 - Chicane Australia
GSC Power Division
GSC Power-Division Valve Stem Seals – Subaru EJ20/EJ25

SKU: GSC1022

$31.00
Available to Order
GSC Power-Division Traditional Exhaust Valve Guide – Subaru EJ20/EJ25 - Chicane Australia
GSC Power Division
GSC Power-Division Traditional Exhaust Valve Guide – Subaru EJ20/EJ25

SKU: GSC3027-8

$95.00
Available to Order
GSC Power-Division Traditional Intake Valve Guide – Subaru EJ20/EJ25 - Chicane Australia
GSC Power Division
GSC Power-Division Traditional Intake Valve Guide – Subaru EJ20/EJ25

SKU: GSC3028-8

$95.00
Available to Order
GSC Power-Division Exhaust Valve – Subaru EJ20/EJ25 - Chicane Australia
GSC Power Division
GSC Power-Division Exhaust Valve – Subaru EJ20/EJ25

SKU: GSC2015-8

$570.00
Available to Order