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  1. Cosworth High Performance Long Block Assemblies for Subaru Forester XT Limited 2007-2007
    $15,868.00
    The Cosworth Subaru EJ25 CS600 series is designed extreme track use the demanding performance enthusiast. Each assembly is precision built by of Cosworths skilled craftsmen using finest components from parts catalog to ensure maximum reliable power performance. Starting with a Subaru EJ257 semi closed deck block; we meticulously hone each bore to guarantee perfect piston to cylinder wall clearance. block is then assembled with Forged Pistons; motorsport grade Forged H Beam connecting rods along with high performance and main bearings a STI Forged crankshaft. maximum performance; an optional steel billet crank is available (CS600X). Once cylinder block assembly is completed; we install a pair of CNC machine port-bored Valve Cylinder heads with proven S2 camshafts complete with valve lash to specifications. cylinder heads secured with high performance 11mm steel studs sealed with a Cosworth high performance stopper layer steel head gasket. Finally; we install of blue-printed; high pressure pumps maximum lubrication. This proven engine combination been used by teams to events in both North Americaand Europe.
    Key Features
    New Subaru EJ25 engine
    New Subaru EJ25 Forged Crankshaft
    Optional Billet Cosworth Crankshaft (CS600X)
    Cosworth Forged H-beam Connecting Rods
    Cosworth Forged Pistons rings
    Cosworth motorsport Tri-metal bearings
    Balanced to within gram
    Complete blue-print assembly
    Enlarged Intake Exhaust ports
    Large diameter stainless steel intake valves
    Large diameter Inconel exhaust valves
    Hi Rev; Dual valve springs
    Titanium Retainers
    Hardened Steel spring platforms.
    Multi angle valve job
    CNC Machined port finish
    Knife edge port divider
    Cosworth S2 High lift camshafts
    Valve lash set
    Cosworth high pressure pump
    Cam covers
    Cosworth serial number Learn More
  2. Cosworth Forged Pistons for Subaru Impreza WRX 2002-2005
    $215.00
    The piston is of most important components within engine. It be subjected to directional change up to times every second must withstand acceleration forces of 8500gs. Cosworth high performance forged pistons designed engineered to withstand this type of punishment still perform. Cosworth's pistons manufactured using same methods as Formula pistons include features such anti scuff skirt coating; ultra-strong pins; polished and patented antidetonation bands. Additionally; each application uses a unique forging to minimize weight ensure strongest possible piston design.
    Key Features
    Unique forgings each application
    Xylan anti scuff skirt coating
    Polished tops (reduces carbon build up relieves stress)
    Manufactured from proprietary alloy (CosAl 010)
    Ultra strong pin
    Patented anti-detonation bands Learn More
  3. Cosworth Ultra High Performance Head Studs for Mitsubishi Lancer Evolution 2003-2005
    $418.00
    Essential high performance engine builds; heavy duty head studs reduce cylinder head movement in high boost or high compression engines optimizing cylinder head to block sealing. Cosworth Ultra High Performance Head Studs manufactured from tool steel with 260;000psi tensile strength come complete with nuts washers. Manufactured with broach for ease of installation. Learn More
  4. Cosworth Ultra High Performance Head Studs for Subaru Baja Base 2004-2006
    $475.00
    Essential high performance engine builds; heavy duty head studs reduce cylinder head movement in high boost or high compression engines optimizing cylinder head to block sealing. Cosworth Ultra High Performance Head Studs manufactured from tool steel with 260;000psi tensile strength come complete with nuts washers. Manufactured with broach for ease of installation. Learn More
  5. Cosworth Forged Pistons for Subaru Impreza WRX STI 2004-2008
    $215.00
    The piston is of most important components within engine. It be subjected to directional change up to times every second must withstand acceleration forces of 8500gs. Cosworth high performance forged pistons designed engineered to withstand this type of punishment still perform. Cosworth's pistons manufactured using same methods as Formula pistons include features such anti scuff skirt coating; ultra-strong pins; polished and patented antidetonation bands. Additionally; each application uses a unique forging to minimize weight ensure strongest possible piston design.
    Key Features
    Unique forgings each application
    Xylan anti scuff skirt coating
    Polished tops (reduces carbon build up relieves stress)
    Manufactured from proprietary alloy (CosAl 010)
    Ultra strong pin
    Patented anti-detonation bands Learn More
  6. Cosworth Forged Pistons for Subaru Impreza WRX STI 2004-2008
    $215.00
    The piston is of most important components within engine. It be subjected to directional change up to times every second must withstand acceleration forces of 8500gs. Cosworth high performance forged pistons designed engineered to withstand this type of punishment still perform. Cosworth's pistons manufactured using same methods as Formula pistons include features such anti scuff skirt coating; ultra-strong pins; polished and patented antidetonation bands. Additionally; each application uses a unique forging to minimize weight ensure strongest possible piston design.
    Key Features
    Unique forgings each application
    Xylan anti scuff skirt coating
    Polished tops (reduces carbon build up relieves stress)
    Manufactured from proprietary alloy (CosAl 010)
    Ultra strong pin
    Patented anti-detonation bands Learn More
  7. Cosworth Forged Pistons for Subaru Impreza WRX STI Limited 2004-2008
    $215.00
    The piston is of most important components within engine. It be subjected to directional change up to times every second must withstand acceleration forces of 8500gs. Cosworth high performance forged pistons designed engineered to withstand this type of punishment still perform. Cosworth's pistons manufactured using same methods as Formula pistons include features such anti scuff skirt coating; ultra-strong pins; polished and patented antidetonation bands. Additionally; each application uses a unique forging to minimize weight ensure strongest possible piston design.
    Key Features
    Unique forgings each application
    Xylan anti scuff skirt coating
    Polished tops (reduces carbon build up relieves stress)
    Manufactured from proprietary alloy (CosAl 010)
    Ultra strong pin
    Patented anti-detonation bands Learn More
  8. Cosworth Billet Crankshafts for Subaru Impreza WRX STI Limited 2004-2008
    $3,800.00
    Increased engine performance often means increased engine speed load. Original factory crankshafts not be able to withstand added stress; resulting in catastrophic failure. Cosworth billet crankshafts machined from ultra strong EN40B steel; engineered to endure harshest condits have been tested to withstand over 1;000HP.
    Key Features
    Superior lubrication
    Profiled counterweights
    High strength
    Light weight Learn More
  9. Cosworth Billet Crankshafts for Subaru Impreza WRX STI 2004-2008
    $3,800.00
    Increased engine performance often means increased engine speed load. Original factory crankshafts not be able to withstand added stress; resulting in catastrophic failure. Cosworth billet crankshafts machined from ultra strong EN40B steel; engineered to endure harshest condits have been tested to withstand over 1;000HP.
    Key Features
    Superior lubrication
    Profiled counterweights
    High strength
    Light weight Learn More
  10. Cosworth Performance Air Filter for Subaru Legacy 2008-2009
    $43.00
    Cosworth Performance Filters constructed from a proprietary synthetic; woven single layer; pleated polyester filter media that requires no oiling. an OE like fit; filter housing is injected molded from High Impact Polystyrene or Polypropylene Each Cosworth filter been engineered to the vehicles original box providing a true cold supply to engine. Cosworth Performance Filters also provide increased flow when compared to original equipment filters.
    Features
    Improved performance
    Superior filtration
    Exceptional dust holding capacity
    Reduced restriction (10%+ compared to OE filters)
    Over efficiency Learn More

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