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  1. Cosworth Big Valve Cylinder Heads for Subaru Impreza WRX STI Limited 2007-2007
    $4,240.00
    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
  2. Cosworth Forged Pistons for Subaru Impreza WRX STI 2004-2008
    $122.00
    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 Forged Pistons for Subaru Impreza WRX STI 2004-2008
    $122.00
    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
  4. Cosworth Forged Pistons for Subaru Impreza WRX STI Limited 2004-2008
    $122.00
    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
  5. Cosworth Streetmaster Brake Pads for Subaru Impreza WRX 2006-2007
    $206.00
    Manufactured in UK; Cosworth brake pads feature a 1.5mm granulated inter-layer which only serves to as a shock absorber; helping to reduce stress on rotor surface triples bonding strength; diminishing edge lifting. To reduce bedding-in or seating-in time this is time it takes the and disc to adapt to each other Cosworth brake pads heat seared. This process heats friction material in excess of degrees toasting surface; greatly enhancing performance first time that driver applies brakes. Scorching pads also significantly reduces initial fading fading increases necessary force pressure required to maintain deceleration of vehicle. Cosworths brake range offers exceptional performance without compromise.
    Specs:
    Superior bite from cold
    Silent running technology
    Fade resistant
    Premium grade friction material
    Consistent & predictable braking patterns
    Medium-hard sports suitable heavy duty/fast road
    ECE approval
    Superior bite Mu friction coefficient virtually from first pedal
    Strong brake effect up to degrees C
    Chamfered edge to avoid lifting
    Fitted with premium quality shim hardware silent braking
    Durability factor with minimal rotor abrasion
    Produces consistent; predictable braking performance Learn More
  6. Cosworth Sport Brake Kit for Subaru Impreza WRX STI 2008-2010
    $3,252.00
    Cosworth Sport brake kits feature fully forged calipers optimal strength light weight. bolt in bridge design allows a super stiff caliper without sacrificing cooling. end result is better performance with less vibration; noise; pad taper.
    Cosworth 2-piece rotors designed 10-30% better airflow than directional vaned racing rotors. They were produced with a proprietary cast iron formula; which specified with durability in mind. hats brackets made with a special type of billet aerospace aluminum are machined in USA to standards.
    All parts bench tested prior to shipment. Each caliper is 100% pressure tested to 2;500 PSI. Every brake line is 100% pressure tested to 4;500 PSI. Every assembled two-piece rotor is tested runout. Each is optimized specific vehicle application.
    Specs:
    Bolt-in bridge minimizes caliper compliance
    2-piece rotor design allows 10-30% better airflow greatly improving performance
    DOT Legal Stainless brake lines with clear abrasion-resistance cover
    Piston sizes optimized each vehicle application to maintain bias
    DifferenTiAL'ston sizes minimize taper longer life a firmer pedal
    Dust boots standard reduced maintenance
    All finished parts 100% leak down pressure tested Learn More
  7. Cosworth Sport Brake Kit for Subaru Impreza WRX STI 2008-2010
    $2,641.00
    Cosworth Sport brake kits feature fully forged calipers optimal strength light weight. bolt in bridge design allows a super stiff caliper without sacrificing cooling. end result is better performance with less vibration; noise; pad taper.
    Cosworth 2-piece rotors designed 10-30% better airflow than directional vaned racing rotors. They were produced with a proprietary cast iron formula; which specified with durability in mind. hats brackets made with a special type of billet aerospace aluminum are machined in USA to standards.
    All parts bench tested prior to shipment. Each caliper is 100% pressure tested to 2;500 PSI. Every brake line is 100% pressure tested to 4;500 PSI. Every assembled two-piece rotor is tested runout. Each is optimized specific vehicle application.
    Specs:
    Bolt-in bridge minimizes caliper compliance
    2-piece rotor design allows 10-30% better airflow greatly improving performance
    DOT Legal Stainless brake lines with clear abrasion-resistance cover
    Piston sizes optimized each vehicle application to maintain bias
    DifferenTiAL'ston sizes minimize taper longer life a firmer pedal
    Dust boots standard reduced maintenance
    All finished parts 100% leak down pressure tested Learn More
  8. Cosworth Sport Brake Kit for Subaru Impreza WRX STI 2008-2010
    $2,540.00
    Cosworth Sport brake kits feature fully forged calipers optimal strength light weight. bolt in bridge design allows a super stiff caliper without sacrificing cooling. end result is better performance with less vibration; noise; pad taper.
    Cosworth 2-piece rotors designed 10-30% better airflow than directional vaned racing rotors. They were produced with a proprietary cast iron formula; which specified with durability in mind. hats brackets made with a special type of billet aerospace aluminum are machined in USA to standards.
    All parts bench tested prior to shipment. Each caliper is 100% pressure tested to 2;500 PSI. Every brake line is 100% pressure tested to 4;500 PSI. Every assembled two-piece rotor is tested runout. Each is optimized specific vehicle application.
    Specs:
    Bolt-in bridge minimizes caliper compliance
    2-piece rotor design allows 10-30% better airflow greatly improving performance
    DOT Legal Stainless brake lines with clear abrasion-resistance cover
    Piston sizes optimized each vehicle application to maintain bias
    DifferenTiAL'ston sizes minimize taper longer life a firmer pedal
    Dust boots standard reduced maintenance
    All finished parts 100% leak down pressure tested Learn More
  9. Cosworth Sport Brake Kit for Subaru Impreza WRX STI 2004-2007
    $2,235.00
    Cosworth Sport brake kits feature fully forged calipers optimal strength light weight. bolt in bridge design allows a super stiff caliper without sacrificing cooling. end result is better performance with less vibration; noise; pad taper.
    Cosworth 2-piece rotors designed 10-30% better airflow than directional vaned racing rotors. They were produced with a proprietary cast iron formula; which specified with durability in mind. hats brackets made with a special type of billet aerospace aluminum are machined in USA to standards.
    All parts bench tested prior to shipment. Each caliper is 100% pressure tested to 2;500 PSI. Every brake line is 100% pressure tested to 4;500 PSI. Every assembled two-piece rotor is tested runout. Each is optimized specific vehicle application.
    Specs:
    Bolt-in bridge minimizes caliper compliance
    2-piece rotor design allows 10-30% better airflow greatly improving performance
    DOT Legal Stainless brake lines with clear abrasion-resistance cover
    Piston sizes optimized each vehicle application to maintain bias
    DifferenTiAL'ston sizes minimize taper longer life a firmer pedal
    Dust boots standard reduced maintenance
    All finished parts 100% leak down pressure tested Learn More
  10. Cosworth Sport Brake Kit for Subaru Impreza WRX STI 2004-2007
    $3,048.00
    Cosworth Sport brake kits feature fully forged calipers optimal strength light weight. bolt in bridge design allows a super stiff caliper without sacrificing cooling. end result is better performance with less vibration; noise; pad taper.
    Cosworth 2-piece rotors designed 10-30% better airflow than directional vaned racing rotors. They were produced with a proprietary cast iron formula; which specified with durability in mind. hats brackets made with a special type of billet aerospace aluminum are machined in USA to standards.
    All parts bench tested prior to shipment. Each caliper is 100% pressure tested to 2;500 PSI. Every brake line is 100% pressure tested to 4;500 PSI. Every assembled two-piece rotor is tested runout. Each is optimized specific vehicle application.
    Specs:
    Bolt-in bridge minimizes caliper compliance
    2-piece rotor design allows 10-30% better airflow greatly improving performance
    DOT Legal Stainless brake lines with clear abrasion-resistance cover
    Piston sizes optimized each vehicle application to maintain bias
    DifferenTiAL'ston sizes minimize taper longer life a firmer pedal
    Dust boots standard reduced maintenance
    All finished parts 100% leak down pressure tested Learn More

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