2021 Subaru Wrx-sti Engine Upgrades

    WRX STI Upgrades by WRX STI Experts. 

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    Shop 2021 Subaru Wrx-sti featured products

    570 Results

    Radium Fuel Hanger (Pumps Not Included) - 2008-2014 Subaru WRX / 2015-2021 STI / 2005-2009 Legacy

    9 In Stock

    20-0780-00

    Radium Fuel Hanger (Pumps Not Included) - 2008-2014 Subaru WRX / 2015-2021 STI / 2005-2009 Legacy

    $493.95
    ACL Race Rod Bearings Standard Size Subaru EJ Models - 2015-2021 Subaru STI / 2000-2013 Forester / 1993-2014 Impreza

    4B8296H-STD

    ACL Race Rod Bearings Standard Size Subaru EJ Models - 2015-2021 Subaru STI / 2000-2013 Forester / 1993-2014 Impreza

    $61.33
    PERRIN EBCS Pro Boost Control Solenoid - 2015-2021 Subaru STI / 2008-2014 Impreza

    5 In Stock

    ASM-TAC-731

    PERRIN EBCS Pro Boost Control Solenoid - 2015-2021 Subaru STI / 2008-2014 Impreza

    $169.15
    Invidia Equal Length Big Piping Exhaust Manifold - 2002-2014 Subaru WRX / 2004-2021 STI / 2005-2009 Legacy GT

    HS05SW1HDP

    Invidia Equal Length Big Piping Exhaust Manifold - 2002-2014 Subaru WRX / 2004-2021 STI / 2005-2009 Legacy GT

    5.0(1)
    $2,462.02
    GrimmSpeed 3in Downpipe to Stock Cat-Back Adapter - 2002-2021 Subaru Turbo EJ Engines

    49 In Stock

    077044

    GrimmSpeed 3in Downpipe to Stock Cat-Back Adapter - 2002-2021 Subaru Turbo EJ Engines

    5.0(1)
    $60.00
    IAG PTFE Flex Fuel System Kit w/ 1300cc Injectors, Lines, FPR, Black Fuel Rails - 2015-2021 Subaru STI

    IAG-AFD-2611BK

    IAG PTFE Flex Fuel System Kit w/ 1300cc Injectors, Lines, FPR, Black Fuel Rails - 2015-2021 Subaru STI

    $2,059.99
    Manley Performance Race Master Stainless Steel Exhaust Valves - Subaru Models (inc. 2002-2005 Subaru WRX / 2004-2021 Subaru STI)

    1 In Stock

    11155-8

    Manley Performance Race Master Stainless Steel Exhaust Valves - Subaru Models (inc. 2002-2005 Subaru WRX / 2004-2021 Subaru STI)

    $201.09
    PERRIN Performance Fender Shroud (Hyper Pink) - 2015-2021 Subaru WRX / STI

    6 In Stock

    PSP-ENG-550HP

    PERRIN Performance Fender Shroud (Hyper Pink) - 2015-2021 Subaru WRX / STI

    $136.00
    Radium Dual Catch Can Kit Fluid Lock - 2002-2014 Subaru WRX / 2004+ STI / 2004-2013 Forester XT

    8 In Stock

    20-0608-FL

    Radium Dual Catch Can Kit Fluid Lock - 2002-2014 Subaru WRX / 2004+ STI / 2004-2013 Forester XT

    $398.95
    Cusco Intercooler Protection Net - 2015-2021 Subaru STI / 2008-2014 Impreza

    4 In Stock

    6A1035A

    Cusco Intercooler Protection Net - 2015-2021 Subaru STI / 2008-2014 Impreza

    $270.00
    ETS Subaru MaxFlow V2 LW Headers - 2015-2021 Subaru STI

    ETS Subaru MaxFlow V2 LW Headers - 2015-2021 Subaru STI

    $1,495.00
    GrimmSpeed Cat-Back Exhaust System Resonated - 2011-2021 Subaru WRX Sedan / STI Sedan

    070033

    GrimmSpeed Cat-Back Exhaust System Resonated - 2011-2021 Subaru WRX Sedan / STI Sedan

    $2,115.07
    OVERTAKE Post MAF Hose Kit - Black - 2008-2014 Subaru WRX / 2008-2021 STI

    OVERTAKE Post MAF Hose Kit - Black - 2008-2014 Subaru WRX / 2008-2021 STI

    $89.00
    Remark R1-Spec Catback Exhaust Burnt Stainless Steel Tip - 2015-2021 Subaru WRX / STI

    1 In Stock

    RK-C1076S-01T

    Remark R1-Spec Catback Exhaust Burnt Stainless Steel Tip - 2015-2021 Subaru WRX / STI

    5.0(1)
    $1,095.00
    Compressive Tuning Air Shield Intercooler Protector (Black) - 2015-2021 Subaru STI

    AS151-EJ-BK

    Compressive Tuning Air Shield Intercooler Protector (Black) - 2015-2021 Subaru STI

    $135.00
    DeatschWerks Fuel Injectors Top Feed 565cc - 2002-2014 Subaru WRX / 2007-2021 STI

    1 In Stock

    21S-01-0565-4

    DeatschWerks Fuel Injectors Top Feed 565cc - 2002-2014 Subaru WRX / 2007-2021 STI

    $379.00
    GrimmSpeed Stock Downpipe to 3inch Exhaust Adapter - Subaru Models (inc. 2004-2021 Subaru STI / 2002-2021 WRX)

    47 In Stock

    077046

    GrimmSpeed Stock Downpipe to 3inch Exhaust Adapter - Subaru Models (inc. 2004-2021 Subaru STI / 2002-2021 WRX)

    4.9(9)
    $60.00
    DeatschWerks Fuel Injectors Top Feed 650cc - 2002-2014 Subaru WRX / 2007-2021 STI

    5 In Stock

    17U-07-0650-4

    DeatschWerks Fuel Injectors Top Feed 650cc - 2002-2014 Subaru WRX / 2007-2021 STI

    $399.00
    Company23 Timing Belt Guide Kit - 2015-2021 Subaru STI / 2004-2013 Forester / 2002-2014 Impreza

    520

    Company23 Timing Belt Guide Kit - 2015-2021 Subaru STI / 2004-2013 Forester / 2002-2014 Impreza

    $54.95
    IAG Performance V2 Competition Series EJ Timing Belt Tensioner - 2015-2021 Subaru STI

    IAG-ENG-5111BK

    IAG Performance V2 Competition Series EJ Timing Belt Tensioner - 2015-2021 Subaru STI

    $589.99

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