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  1. Brian Crower RETAINERS - TITANIUM (Subaru EJ205-WRX / EJ257-STi, Toyota 3SGTE) Set/16
    $169.34
    Brian Crower Spring and Retainers
    Valvesprings
    Designed for high rpm; Brian Crower valve springs are wound from only the highest grade; super clean; chrome silicone alloy and feature proprietary processing procedures (chamfer; debur; etc) for consistent pressures over long term; high rpm usage. Quality valve springs are critical in the prevention of premature valve float.
    Retainers
    The ultimate in lightweight high performance; Brian Crower titanium retainers typically weigh in approximately 40% less than the factory OEM steel units. CNC machined for premium 6AL4V titanium bar stock to exacting tolerances.
    Spring/Retainer Kits
    Brian Crower valve spring and titanium retainers kits are system matched to work in unison to deliver better valve control at extended rpms and allow for greater lift camshafts for added performance and reliability.
    Keepers/Locks
    Spring Seats Learn More
  2. Brian Crower RETAINERS - TITANIUM (Mitsubishi 4B11T - Evo X, Hyundai G4KF - Genesis)
    $169.34
    Brian Crower Spring and Retainers
    Valvesprings
    Designed for high rpm; Brian Crower valve springs are wound from only the highest grade; super clean; chrome silicone alloy and feature proprietary processing procedures (chamfer; debur; etc) for consistent pressures over long term; high rpm usage. Quality valve springs are critical in the prevention of premature valve float.
    Retainers
    The ultimate in lightweight high performance; Brian Crower titanium retainers typically weigh in approximately 40% less than the factory OEM steel units. CNC machined for premium 6AL4V titanium bar stock to exacting tolerances.
    Spring/Retainer Kits
    Brian Crower valve spring and titanium retainers kits are system matched to work in unison to deliver better valve control at extended rpms and allow for greater lift camshafts for added performance and reliability.
    Keepers/Locks
    Spring Seats Learn More
  3. Brian Crower VALVE SPRINGS - SINGLE (Subaru EJ205-WRX / EJ257-STi)
    $79.39
    Brian Crower Spring and Retainers
    Valvesprings
    Designed for high rpm; Brian Crower valve springs are wound from only the highest grade; super clean; chrome silicone alloy and feature proprietary processing procedures (chamfer; debur; etc) for consistent pressures over long term; high rpm usage. Quality valve springs are critical in the prevention of premature valve float.
    Retainers
    The ultimate in lightweight high performance; Brian Crower titanium retainers typically weigh in approximately 40% less than the factory OEM steel units. CNC machined for premium 6AL4V titanium bar stock to exacting tolerances.
    Spring/Retainer Kits
    Brian Crower valve spring and titanium retainers kits are system matched to work in unison to deliver better valve control at extended rpms and allow for greater lift camshafts for added performance and reliability.
    Keepers/Locks
    Spring Seats Learn More
  4. Brian Crower VALVE SPRINGS - SINGLE (Mitsubishi 4B11T - Evo X, Hyundai G4KF - Genesis)
    $79.39
    Brian Crower Spring and Retainers
    Valvesprings
    Designed for high rpm; Brian Crower valve springs are wound from only the highest grade; super clean; chrome silicone alloy and feature proprietary processing procedures (chamfer; debur; etc) for consistent pressures over long term; high rpm usage. Quality valve springs are critical in the prevention of premature valve float.
    Retainers
    The ultimate in lightweight high performance; Brian Crower titanium retainers typically weigh in approximately 40% less than the factory OEM steel units. CNC machined for premium 6AL4V titanium bar stock to exacting tolerances.
    Spring/Retainer Kits
    Brian Crower valve spring and titanium retainers kits are system matched to work in unison to deliver better valve control at extended rpms and allow for greater lift camshafts for added performance and reliability.
    Keepers/Locks
    Spring Seats Learn More
  5. Cosworth LowTemp Motorsport Thermostat for Subaru Baja 2003-2006
    $107.00
    A addition to range of thermal management cooling system upgrade components; Cosworth LowTemp Motorsport Thermostats engineered to precisely control engine temperature in demanding condits found in typical motorsport use. Each Cosworth LowTemp Motorsport Thermostats is manufactured to highest standards includes a unique feature that accurately controls coolant flow to prevent temperature coolant surge that cause engine damage. Learn More
  6. Cosworth Big Valve Cylinder Heads for Subaru Impreza WRX STI 2004-2006
    $5,765.00
    For over 40 years; Cosworth's been leader in innovative multi valve cylinder head design both racing high performance production cars. Cosworth Ported Valve Cylinder head range is latest advancement. Modified from OE cylinder head castings; substantial flow improvements upgraded valve train components offer superior performance your high performance engine.
    Each original cylinder head design is carefully evaluated tested to establish improvements required to meet target performance level. Hours of testing flow bench validation used to determine best advanced port design yielding maximum usable power response. However; there is more to cylinder head design than just maximum flow. It is critical that port velocits maintained to ensure drivability valve train components matched to guarantee reliable performance. Once of these factors have been tested validated; final port contour is digitized. Using digitized program; we then reshape both intake exhaust ports using axis mill producing an accurate consistent port shape every time. In addition to reshaping enlarging intake exhaust ports; most Valve Cylinder heads feature a re-shaped combustion chamber to un-shroud valves increasing flow performance. After machining; each cylinder head receives a multiangle high performance valve on precision valve seat cutter. Then each cylinder head is ultrasonically; cleaned; serialized then hand assembled with select high performance valve train components; ready to install on your engine.
    Key Features
    All OE Castings
    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
    Reshaped combustion chamber on most applications
    Flow bench proven design
    Dyno tested
    Machined Cosworth Logo
    Precision Multi angle valve job
    Pre-assembled; ready to install
    Machined port bore finish
    Knife edge port divider Learn More
  7. Cosworth Big Valve Cylinder Heads for Subaru Impreza WRX STI 2004-2006
    $5,765.00
    For over 40 years; Cosworth's been leader in innovative multi valve cylinder head design both racing high performance production cars. Cosworth Ported Valve Cylinder head range is latest advancement. Modified from OE cylinder head castings; substantial flow improvements upgraded valve train components offer superior performance your high performance engine.
    Each original cylinder head design is carefully evaluated tested to establish improvements required to meet target performance level. Hours of testing flow bench validation used to determine best advanced port design yielding maximum usable power response. However; there is more to cylinder head design than just maximum flow. It is critical that port velocits maintained to ensure drivability valve train components matched to guarantee reliable performance. Once of these factors have been tested validated; final port contour is digitized. Using digitized program; we then reshape both intake exhaust ports using axis mill producing an accurate consistent port shape every time. In addition to reshaping enlarging intake exhaust ports; most Valve Cylinder heads feature a re-shaped combustion chamber to un-shroud valves increasing flow performance. After machining; each cylinder head receives a multiangle high performance valve on precision valve seat cutter. Then each cylinder head is ultrasonically; cleaned; serialized then hand assembled with select high performance valve train components; ready to install on your engine.
    Key Features
    All OE Castings
    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
    Reshaped combustion chamber on most applications
    Flow bench proven design
    Dyno tested
    Machined Cosworth Logo
    Precision Multi angle valve job
    Pre-assembled; ready to install
    Machined port bore finish
    Knife edge port divider Learn More
  8. Cosworth High Performance Long Block Assemblies for Subaru Baja Base 2004-2006
    $11,977.00
    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
  9. Cosworth Forged Pistons for Subaru Forester 2.5 XT 2004-2009
    $228.00
    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
  10. Cosworth High Performance Valvetrain - High Performance Valves for Subaru Forester 2.5 XT 2004-2009
    $23.00
    Large diameter valves essential improved flow. Cosworth high performance intake valves produced from high quality stainless steel maximum durability. Exhaust valves machined from Inconel for
    high temperature (2400 F) reliability. Each valve features swirl polished back improved flow dished face additional weight reduction. Cosworth high performance valves compatible with Cosworth Ultra
    Race Valve Spring kits. Learn More

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