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

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    1660 Results

    Subaru STI Type RA Piano Black Dash Trim (Driver) - 2015-2021 Subaru WRX / STI

    66078VA110

    Subaru STI Type RA Piano Black Dash Trim (Driver) - 2015-2021 Subaru WRX / STI

    $79.00
    Torque Solution Thermal Downpipe Blanket Carbon Subaru EJ20/EJ25 - 2015-2021 Subaru STI / 2003-2006 Impreza

    6 In Stock

    TS-TH-SDPC

    Torque Solution Thermal Downpipe Blanket Carbon Subaru EJ20/EJ25 - 2015-2021 Subaru STI / 2003-2006 Impreza

    $188.88
    APR Performance Factory Wing Gurney Flap - 2015-2021 Subaru STI

    GF-801545

    APR Performance Factory Wing Gurney Flap - 2015-2021 Subaru STI

    $127.50
    FactionFab Front Brake Line - 2018-2021 Subaru STI

    1.10210.1

    FactionFab Front Brake Line - 2018-2021 Subaru STI

    $70.00
    Exedy Stage 1 Organic Disc Clutch Kit - 2004-2021 Subaru STI

    16 In Stock

    15803

    Exedy Stage 1 Organic Disc Clutch Kit - 2004-2021 Subaru STI

    $637.31
    Manley Economical H Beam Steel Connecting Rod - Subaru Models (inc. 2002-2005 Subaru WRX / 2004-2021 Subaru STI)

    13 In Stock

    14024-4

    Manley Economical H Beam Steel Connecting Rod - Subaru Models (inc. 2002-2005 Subaru WRX / 2004-2021 Subaru STI)

    $518.00
    RS-R Lower Control Arms (Rear) - 2015-2024 Subaru WRX / 2015-2021 STI / 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86

    4 In Stock

    RLAT065

    RS-R Lower Control Arms (Rear) - 2015-2024 Subaru WRX / 2015-2021 STI / 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86

    3.5(2)
    $609.00

    8 In Stock

    15WRXMBFEND-GRN

    GCS Fender Emblems (Matte Green) - 2015-2021 Subaru WRX / STI

    $39.00
    Raceseng Rondure Beaded Shift Knob - 2015-2021 Subaru WRX / STI / 2004-2014 Impreza / 2007-2012 Legacy

    2 In Stock

    08321BE-08013-081102

    Raceseng Rondure Beaded Shift Knob - 2015-2021 Subaru WRX / STI / 2004-2014 Impreza / 2007-2012 Legacy

    $160.00
    COBB Throttle Body Coupler - 2015-2021 Subaru STI / 2004-2008 Forester / 2002-2014 Impreza

    712455

    COBB Throttle Body Coupler - 2015-2021 Subaru STI / 2004-2008 Forester / 2002-2014 Impreza

    $55.00
    Subaru Rear Aero Splashguard USDM - 2015-2021 Subaru WRX / STI

    J101SVA000T2

    Subaru Rear Aero Splashguard USDM - 2015-2021 Subaru WRX / STI

    $144.18
    aFe Power Panel Air Filter (oiled) - 2015-2024 Subaru WRX / 2015-2021 STI / 2014-2021 Forester

    4 In Stock

    30-10161

    aFe Power Panel Air Filter (oiled) - 2015-2024 Subaru WRX / 2015-2021 STI / 2014-2021 Forester

    $70.00
    DeatschWerks Bosch EV14 Fuel Injectors Top Feed 1200cc - 2015-2021 Subaru STI / 2006-2008 Forester / 2002-2014 Impreza

    3 In Stock

    16MX-07-1200-4

    DeatschWerks Bosch EV14 Fuel Injectors Top Feed 1200cc - 2015-2021 Subaru STI / 2006-2008 Forester / 2002-2014 Impreza

    $569.00
    Darton Iron Dry Sleeves - Subaru EJ25 Models (inc. 2004-2021 STI)

    300-031-3D

    Darton Iron Dry Sleeves - Subaru EJ25 Models (inc. 2004-2021 STI)

    $525.00
    OLM V2 Rear Window Visor - 2015-2021 Subaru WRX / STI

    RRV-WRX14-V2

    OLM V2 Rear Window Visor - 2015-2021 Subaru WRX / STI

    4.5(2)
    $119.95
    Dress Up Bolts Titanium Hardware Trunk Kit (Blue) - 2015-2021 Subaru WRX / STI

    SUB-019-TI-BLU

    Dress Up Bolts Titanium Hardware Trunk Kit (Blue) - 2015-2021 Subaru WRX / STI

    $59.39
    Corsa 3" Catback Exhaust System (Stainless Steel Tips) - 2015-2021 Subaru WRX / STI

    38 In Stock

    14857

    Corsa 3" Catback Exhaust System (Stainless Steel Tips) - 2015-2021 Subaru WRX / STI

    $1,856.99
    Subaru RING-CENTER,VENTILATION LEFT - Subaru Models (inc. 2015-2021 Subaru WRX / STI)

    66111FJ010

    Subaru RING-CENTER,VENTILATION LEFT - Subaru Models (inc. 2015-2021 Subaru WRX / STI)

    5.0(1)
    $12.13
    APR Performance GT3 Mirrors with OEM Style Base - 2015-2021 Subaru WRX / STI

    CB-801502B

    APR Performance GT3 Mirrors with OEM Style Base - 2015-2021 Subaru WRX / STI

    $462.40
    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

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