EJ25

Subaru WRX STI 2.5 EJ257 Mahle piston kit 99.75mm CR 8.5 930285027

Bore size	99.75mm
Stroke	79.00mm
Mahle compression ratio (CR)	8.5:1 - 56cc cylinder head 9.1:1 - 50cc cylinder head
OEM compression ratio (CR)	8.0:1
Dome volume (CC)	-19.25cm³
Compression height (CH)	30.70mm
Pin diameter	23mm
Features	4032 material
Fits for	Subaru WRX STI 2.5 (EJ257)

€799.00

Subaru WRX STI 2.5 EJ257 Mahle piston kit 100mm CR 8.5 930285037

Bore size	100.00mm
Stroke	79.00mm
Mahle compression ratio (CR)	8.5:1 - 56cc cylinder head 9.1:1 - 50cc cylinder head
OEM compression ratio (CR)	8.0:1
Dome volume (CC)	-19.25cm³
Compression height (CH)	30.70mm
Pin diameter	23mm
Features	4032 material
Fits for	Subaru WRX STI 2.5 (EJ257)

€799.00

Toyota 3S-GTE 2JZ-GTE 7M-GTE / Subaru EJ20 EJ25 / Mazda Supertech 6mm intake...

Supertech intake valve seals are made from a high quality rubber compound.

€2.00

Toyota 3S-GTE 2JZ-GTE 7M-GTE / Subaru EJ20 EJ25 / Mazda Supertech 6mm exhaust...

Supertech exhaust valve seals feature a special hi-temperature compound (viton) for improved durability.

€2.00

ACL Race Series Subaru EJ20 / EJ22 / EJ25 oil pump OPSB1478HP

ACL RACE Series performance oil pumps and passenger car oil pumps assure constant and
uninterrupted flow throughout the engine’s circulatory system, ensuring the lubrication
system does not miss a beat. ACL RACE Series oil pumps are designed with high output
and high volume capabilities featuring gerotor sets that are precision machined from steel
copper alloy material. Fine tolerances ensure optimum pressure and flow.
Performance Oil Pump features:
• Increased flow and pressure characteristics
• Individually inspected and tested to assure pressure and flow characteristics

RPM	Litres/Min	Gal/Min	Hi Volume Litres/Min	Hi Volume Gal/Min
600	4,9	1,29	8,5	2,25
3000	16,8	4,44	28,8	7,61
5000	41,3	10,91	51,2	13,53

€299.00

Cometic Subaru EJ25 2.5 16V MLX cylinder head gasket 101x1mm C4578-040

COMETIC MLX (Multi-Layer Stopper) gaskets utilize an integrated stopper layer for combustion chamber sealing and improved clamp load around the cylinder without increasing bore distortion. MLX technology can be found in some head gaskets and are made from the same materials as our MLS Head Gaskets. No sealants or re-torque required.

€229.00

Cometic Subaru EJ25 2.5 16V MLX cylinder head gasket 101x1.32mm C4578-052

COMETIC MLX (Multi-Layer Stopper) gaskets utilize an integrated stopper layer for combustion chamber sealing and improved clamp load around the cylinder without increasing bore distortion. MLX technology can be found in some head gaskets and are made from the same materials as our MLS Head Gaskets. No sealants or re-torque required.

€229.00

Subaru WRX 16V EJ20 / EJ25 Ferrea intake valve STD F6077

The 6000 Series Competition Valves are designed to provide excellent reliability in an environment of high spring pressures and roller cams, at a budget price. They have higher fatigue resistance and tensile strengths than our competitor’s best offerings.

To manufacture the valves we use our exclusive two-step slow forging process using EV8 stainless steel on both intake and exhaust valves.We provide a special heat-treatment and stress relieving process, along with hard chrome stems and friction-welded hard tips. We finish with a swirl polished head. The valves feature flow improvements to deliver the power needed for today’s sophisticated racing engines.

€28.00

Subaru WRX 16V EJ20 / EJ25 Ferrea exhaust valve STD F6075

The 6000 Series Competition Valves are designed to provide excellent reliability in an environment of high spring pressures and roller cams, at a budget price. They have higher fatigue resistance and tensile strengths than our competitor’s best offerings.

To manufacture the valves we use our exclusive two-step slow forging process using EV8 stainless steel on both intake and exhaust valves.We provide a special heat-treatment and stress relieving process, along with hard chrome stems and friction-welded hard tips. We finish with a swirl polished head. The valves feature flow improvements to deliver the power needed for today’s sophisticated racing engines.

€29.00

Subaru 2.0 2.5 16V EJ20 EJ25 ARP case bolt kit 260-5401

ARP is a manufacturer of fasteners/bolts found in engines and drivelines, ranging from OEM replacement parts to specialty hardware for racing applications. ARP is the world leader in fastener technology.

€769.00

Subaru WRX 2.5 16V EJ257 JE Pistons Ultra Series CR 9.5 99.5mm 361330

Product detailed specification
Bore size	99.50mm
Stroke	79.00mm
JE Pistons compression ratio (CR)	9.5:1
OEM compression ratio (CR)	8.0:1
Dome volume (CC)	-7cm³
Compression height (CH)	30.70mm
Pin diameter	23mm
Features	Accepts Turbo and Nitrous; FSR series Skirt, Ultra series
Fits for	Subaru Impreza WRX STI - 2.5 16V (EJ257)

€1,069.00

Subaru WRX 2.5 16V EJ257 JE Pistons Ultra Series CR 9.5 99.75mm 361331

Product detailed specification
Bore size	99.75mm
Stroke	79.00mm
JE Pistons compression ratio (CR)	9.5:1
OEM compression ratio (CR)	8.0:1
Dome volume (CC)	-7.3cm³
Compression height (CH)	30.70mm
Pin diameter	23mm
Features	Accepts Turbo and Nitrous; FSR series Skirt, Ultra series
Fits for	Subaru Impreza WRX STI - 2.5 16V (EJ257)

€1,069.00