2018 Subaru WRX STI Mods, Upgrades & Accessories

    WRX STI Upgrades by WRX STI Experts. 

    2018 marks as the third year in production for the VB STI. We know what makes this car fast as the EJ remains as the soul powerplant for the STI. Enthusiasts on a worldwide scale are making the sound of their people through cat-back exhaust systems, blow-off valves, while being strong contenders at local weekend track events. However, because noises are what makes a turbocharged vehicle more appealing to drive, we need to remember that this all-wheel-drive platform needs to brake properly, and stay on the safer side of things.

    For those of you who have pushed the limits of your factory brake pads, you can move onto a more aggressive compound. The Stoptech Posiquiet Front Brake Pads can endure more heat at your local autocross, but still remains a low noise, low dust compound that makes them daily friendly. Another great way to upgrade your calipers is to install Faction Fab Stainless Steel Brake Lines because unlike the OEM rubber lines, stainless steel examples will not expand under pressure, delivering a faster response from the brake pedal straight to the calipers. And when you do upgrade to stainless steel brake lines, make sure you bleed your brakes with an appropriate brake fluid such as the Motul RBF 660 Brake Fluid that has a higher boiling point to prevent any air gaps to develop during harsher braking conditions at the track. Upgrading your brake system on your STI is something you should always consider to maintain the performance and safety of your rally-inspired AWD Subaru.

    Shop 2018 Subaru Wrx-sti Upgrades by Category

    Shop 2018 Subaru Wrx-sti featured products

    1633 Results

    BC Racing BR Coilovers Extreme Low - 2015-2021 Subaru WRX / STI

    F-25E-BR-9K-9K

    BC Racing BR Coilovers Extreme Low - 2015-2021 Subaru WRX / STI

    5.0(1)
    $1,345.00
    PERRIN Top Mount Intercooler (Silver) - 2008-2021 Subaru STI

    12 In Stock

    PSP-ITR-302SL

    PERRIN Top Mount Intercooler (Silver) - 2008-2021 Subaru STI

    $756.50
    Cusco Rear End Power Brace - 2015-2021 Subaru WRX / STI

    3 In Stock

    6A1492RE

    Cusco Rear End Power Brace - 2015-2021 Subaru WRX / STI

    $204.30
    Grimmspeed Hood Struts - High Lift - 2015-2024 Subaru  WRX / 2015-2021 STI

    113072

    Grimmspeed Hood Struts - High Lift - 2015-2024 Subaru WRX / 2015-2021 STI

    $104.00
    APR Performance Carbon Fiber Rear Spats - 2015-2021 Subaru WRX / STI

    1 In Stock

    FS-815028

    APR Performance Carbon Fiber Rear Spats - 2015-2021 Subaru WRX / STI

    $409.70
    Radium Fuel Filter Mount - 2008-2021 Subaru WRX / STI / 2008-2018 Forester XT

    6 In Stock

    20-0605

    Radium Fuel Filter Mount - 2008-2021 Subaru WRX / STI / 2008-2018 Forester XT

    $75.95
    Cusco Rear Cross Strut Brace - 2015-2021 Subaru WRX / STI

    6A1541AX

    Cusco Rear Cross Strut Brace - 2015-2021 Subaru WRX / STI

    4.8(4)
    $276.30
    PERRIN Oil Cap (Blue) - Subaru Models (Inc. 2002-2024 WRX / 2004-2021 STI / 1998-2024 Forester / 2013-2024 BRZ)

    6 In Stock

    PSP-ENG-711BL

    PERRIN Oil Cap (Blue) - Subaru Models (Inc. 2002-2024 WRX / 2004-2021 STI / 1998-2024 Forester / 2013-2024 BRZ)

    $69.70
    3D MAXpider Rear Row Heavy Duty All Weather Floor Mats - 2015-2021 Subaru WRX / STI / 2013-2017 Crosstrek

    7 In Stock

    L1SB00821509

    3D MAXpider Rear Row Heavy Duty All Weather Floor Mats - 2015-2021 Subaru WRX / STI / 2013-2017 Crosstrek

    $79.99
    COBB Tuning Front Control Arm Inner Bushing Kit w/ Standard Alignment - 2015-2021 Subaru WRX / 2011-2021 STI

    CB-4425K

    COBB Tuning Front Control Arm Inner Bushing Kit w/ Standard Alignment - 2015-2021 Subaru WRX / 2011-2021 STI

    $270.00
    OLM LE Dry Carbon Fiber AC Trim Covers by Axis-Parts Japan - 2015-2021 Subaru WRX / STI / 2014-2018 Forester / 2013-2017 Crosstrek

    4 In Stock

    OLM-AXIS-15WRX-ACVENT

    OLM LE Dry Carbon Fiber AC Trim Covers by Axis-Parts Japan - 2015-2021 Subaru WRX / STI / 2014-2018 Forester / 2013-2017 Crosstrek

    5.0(2)
    $205.00
    COBB Rear Differential Subframe Mount Bushing Insert - 2008-2021 Subaru WRX / STI

    3 In Stock

    CB-4297K

    COBB Rear Differential Subframe Mount Bushing Insert - 2008-2021 Subaru WRX / STI

    $40.00
    OLM Leather Look Kick Guard Protection Set with Red Stitching (Non HK Equipped) - 2015-2021 Subaru WRX / STI

    9 In Stock

    KG-SL-001-L-R

    OLM Leather Look Kick Guard Protection Set with Red Stitching (Non HK Equipped) - 2015-2021 Subaru WRX / STI

    $70.00
    Compressive louver cover - 2015-2021 Subaru WRX / STI

    LVC-BK-1

    Compressive louver cover - 2015-2021 Subaru WRX / STI

    $219.00
    Subaru OEM Turbo to Downpipe Gasket - 2015-2021 Subaru STI

    7 In Stock

    44022AA180

    Subaru OEM Turbo to Downpipe Gasket - 2015-2021 Subaru STI

    5.0(1)
    $27.77
    OLM JDM Style Carbon Fiber Front Lip - Black - 2018-2021 Subaru WRX / STI

    15 In Stock

    A.70148.1

    OLM JDM Style Carbon Fiber Front Lip - Black - 2018-2021 Subaru WRX / STI

    $549.00
    Grimmspeed Stubby Delrin Black Shift Knob - 2002-2014 Subaru WRX / 2004-2021 Subaru STI

    5 In Stock

    038012

    Grimmspeed Stubby Delrin Black Shift Knob - 2002-2014 Subaru WRX / 2004-2021 Subaru STI

    $52.00
    GrimmSpeed Unequal Length Header - 2002-2014 Subaru WRX / 2004-2021 STI

    8 In Stock

    113026

    GrimmSpeed Unequal Length Header - 2002-2014 Subaru WRX / 2004-2021 STI

    3.0(1)
    $999.00
    King Crankshaft Main Bearings SUBARU EJ20/EJ22/EJ25 - 2002-2014 Subaru WRX / 2004-2021 STI

    13 In Stock

    MB5382XPGC

    King Crankshaft Main Bearings SUBARU EJ20/EJ22/EJ25 - 2002-2014 Subaru WRX / 2004-2021 STI

    $250.00
    Killer B M20 Oil Plug Copper Seal - 2002-2014 Subaru WRX / 2004-2021 STI / 2006-2013 Forester XT

    CPS

    Killer B M20 Oil Plug Copper Seal - 2002-2014 Subaru WRX / 2004-2021 STI / 2006-2013 Forester XT

    $10.00

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