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Modern Automotive Performance :: '08+ STi :: Engine Components

Engine Components
Camshafts
MAP Cylinder Head Service
Oil Delivery and Accessories
Shortblocks
Valves & Springs



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Agency Power Alternator Cover 2008+ Subaru WRX STi
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Agency Power Alternator Cover 2008+ Subaru WRX STi

Agency Power Alternator Cover 2008+ Subaru WRX STi AP-GH-140

Our price: $134.99

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Agency Power Billet Pitch Stop Mount Subaru WRX STi AP-GDA-165
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Agency Power Billet Pitch Stop Mount Subaru WRX STi AP-GDA-165

Agency Power Billet Pitch Stop Mount Subaru WRX STi AP-GDA-165

Our price: $84.99
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Agency Power Lightweight Crank Pulley Subaru WRX STi
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Agency Power Lightweight Crank Pulley Subaru WRX STi

Agency Power Lightweight Crank Pulley Subaru WRX STi AP-GDA-130

Our price: $116.99

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Agency Power Manifold Temp Reducer Gaskets Subaru WRX STi
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Agency Power Manifold Temp Reducer Gaskets Subaru WRX STi

Agency Power Manifold Temp Reducer Gaskets Subaru WRX STi AP-GDA-185

Our price: $53.99
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Agency Power Oil Filler Cap Subaru WRX STi
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Agency Power Oil Filler Cap Subaru WRX STi

Agency Power Oil Filler Cap Subaru WRX STi AP-GDA-180

Our price: $53.99

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AMS Subaru Stage 1 EJ25 Short Block
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AMS Subaru Stage 1 EJ25 Short Block

AMS Subaru Stage 1 EJ25 Short Block

Our price: $3200.00

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AMS Subaru Stage 2 EJ25 Short Block
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AMS Subaru Stage 2 EJ25 Short Block

AMS Subaru Stage 2 EJ25 Short Block

Our price: $4100.00

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Brian Crower I-Beam Connecting Rods (Subaru EJ205/EJ257)
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Brian Crower I-Beam Connecting Rods (Subaru EJ205/EJ257)

Brian Crower offers an I-Beam style connecting rod for those who prefer that traditional design over the H Beam style.

Our price: $459.00

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Cosworth Engine Bearings (Subaru EJ20 / EJ25)
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Cosworth Engine Bearings (Subaru EJ20 / EJ25)

Cosworth Engine Bearings (Subaru EJ20 / EJ25)

Our price: $177.00

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Cosworth High Performance Head Gasket (2008+ STi)
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Cosworth High Performance Head Gasket (2008+ STi)

Cosworth High Performance Head Gasket (2008+ STi)

Our price: $99.99
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Crawford Direct Replacement Forged Pistons (STi 04-08+)
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Crawford Direct Replacement Forged Pistons (STi 04-08+)

Crawford Performance pistons are specifically engineered for extreme applications up to, and including, professional competition. In this environment, the higher compression ratios, highest boost or heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy.

Our price: $849.95
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Crawford Race Prepped Cylinder Heads (STi 04-08+)
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Crawford Race Prepped Cylinder Heads (STi 04-08+)

Crawford Performance professionally hand ported high power cylinder heads come complete with a performance valve job, valve springs with titanium retainers and are ready to install.

Our price: $4489.95
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