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  • Manley Race Series Inconel Exhaust Valves (Subaru WRX 2002+ EJ20) - Modern Automotive Performance
  • Manley Race Series Inconel Exhaust Valves (Subaru WRX 2002+ EJ20)

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    Manley Performance

    Manley Race Series Inconel Exhaust Valves

    PART#
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    Email - sales@maperformance.com

    Phone 1-888-627-3736



    $ 379.95   $ 541.60
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    These are the ultimate in design from Manley Perfromance featuring a fully sculpted "Pro Flo" underhead design for maximum air movement in and out of the cylinder! All manley stainless steel valves feature double chrome stems and hardend tips for performance value over the long haul. All manley Subaru WRX and STi valves feature stock radius triple keeper grooves for superior valve retention! Manley stainless steel exhaust valves are fully forged and then machined from an Inconel (Yes the same thing high end turbocharger turbine wheels are machined from!) steel material giving them superior hardness and strength against heat. Manley pays extra attention to the swirl polishing, fully machined combustion faces of the head of the valve, and undercutting the stem to head diameter for a superior balance between strength and maximum flow! Fitments - Subaru 2002+ WRX EJ20 Subaru 2004+ WRX STi EJ2507
    These are the ultimate in design from Manley Perfromance featuring a fully sculpted "Pro Flo" underhead design for maximum air movement in and out of the cylinder! All manley stainless steel valves feature double chrome stems and hardend tips for performance value over the long haul. All manley Subaru WRX and STi valves feature stock radius triple keeper grooves for superior valve retention! Manley stainless steel exhaust valves are fully forged and then machined from an Inconel (Yes the same thing high end turbocharger turbine wheels are machined from!) steel material giving them superior hardness and strength against heat. Manley pays extra attention to the swirl polishing, fully machined combustion faces of the head of the valve, and undercutting the stem to head diameter for a superior balance between strength and maximum flow! Fitments - Subaru 2002+ WRX EJ20 Subaru 2004+ WRX STi EJ2507

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    MAP Limited Lifetime Warranty

    1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship.

    2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review.

    3.) You must create a support ticket to acquire your return authorization number prior to returning the product.

    4.) Warranty claims will not be honored if the product was not purchased through an approved dealer.

    For warranty evaluation please create a support ticket via this form here.

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