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

    1285 Results

    Wilwood FNSL6R Front Brake Kit 13.06in Slotted Black - 2002-2014 Subaru WRX / 2004-2021 Subaru STI

    140-12874

    Wilwood FNSL6R Front Brake Kit 13.06in Slotted Black - 2002-2014 Subaru WRX / 2004-2021 Subaru STI

    $2,230.79
    OLM OE Style Mirror Cover with Turn Signal Cutout - Dark Grey Metallic - 2015-2021 Subaru WRX / STI / 2015-2017 Crosstrek

    A.700193.1-61K

    OLM OE Style Mirror Cover with Turn Signal Cutout - Dark Grey Metallic - 2015-2021 Subaru WRX / STI / 2015-2017 Crosstrek

    $115.00
    Competition Clutch OE Replacement Clutch - 2004-2021 Subaru STI

    13 In Stock

    15030-STOCK

    Competition Clutch OE Replacement Clutch - 2004-2021 Subaru STI

    $550.00
    GrimmSpeed Pitch Stop Mount Race Version - 2015-2021 Subaru WRX

    49 In Stock

    122009

    GrimmSpeed Pitch Stop Mount Race Version - 2015-2021 Subaru WRX

    4.0(1)
    $109.00
    APR Performance Carbon Fiber Side Rocker Extensions - 2015-2021 Subaru WRX / STI

    FS-815008

    APR Performance Carbon Fiber Side Rocker Extensions - 2015-2021 Subaru WRX / STI

    5.0(1)
    $851.96
    PERRIN Performance Tow Hook Kit Rear (Black) - 2008-2021 Subaru WRX / STI Sedan

    2 In Stock

    PSP-BDY-252BK

    PERRIN Performance Tow Hook Kit Rear (Black) - 2008-2021 Subaru WRX / STI Sedan

    5.0(1)
    $89.25
    Invidia R400 Gemini Single Layer Cat Back Exhaust - Titanium Burnt Tips - 2015-2021 Subaru WRX / STI

    85 In Stock

    HS15STIGM4ST

    Invidia R400 Gemini Single Layer Cat Back Exhaust - Titanium Burnt Tips - 2015-2021 Subaru WRX / STI

    5.0(2)
    $1,848.28
    OLM LE Dry Carbon Fiber Rear Bumper Protector - 2015-2021 Subaru WRX / STI

    2 In Stock

    ST329

    OLM LE Dry Carbon Fiber Rear Bumper Protector - 2015-2021 Subaru WRX / STI

    5.0(3)
    $219.00
    Tein Mono Sport Coilovers - 2015-2021 Subaru WRX / STI

    GSSB0-71SS1

    Tein Mono Sport Coilovers - 2015-2021 Subaru WRX / STI

    $1,890.50
    ACT Mod-Twin 225 XT Rigid Street Clutch Kit - 2004-2021 Subaru STI

    3 In Stock

    T2S-S07

    ACT Mod-Twin 225 XT Rigid Street Clutch Kit - 2004-2021 Subaru STI

    $1,955.00
    Overtake OEM Downpipe to 3in Cat Back Adapter - Subaru Turbo Models (Inc. 2002-2025 Subaru WRX / 2004-2021 Subaru WRX STi)

    A10024

    Overtake OEM Downpipe to 3in Cat Back Adapter - Subaru Turbo Models (Inc. 2002-2025 Subaru WRX / 2004-2021 Subaru WRX STi)

    $56.00
    Flatout Trail Runner Unloaded 2” Suspension Lift Kit - 2015-2021 Subaru STI

    Flatout Trail Runner Unloaded 2” Suspension Lift Kit - 2015-2021 Subaru STI

    $1,175.40
    Flatout Suspension GR40 Coilovers - 2015-2021 Subaru STI

    Flatout Suspension GR40 Coilovers - 2015-2021 Subaru STI

    $3,133.80
    Cusco Rear Member Side Power Brace - 2015-2021 Subaru WRX / STI / 2014-2018 Forester / 2013-2017 Crosstrek / 2008-2014 Impreza / 2010-2012 Legacy

    6 In Stock

    687492RS

    Cusco Rear Member Side Power Brace - 2015-2021 Subaru WRX / STI / 2014-2018 Forester / 2013-2017 Crosstrek / 2008-2014 Impreza / 2010-2012 Legacy

    4.0(2)
    $245.00
    FactionFab FL-Spec Coilovers V2 - 2015-2021 Subaru WRX / STI

    34 In Stock

    1.10277.3

    FactionFab FL-Spec Coilovers V2 - 2015-2021 Subaru WRX / STI

    4.8(6)
    $1,150.00
    Gates Racing Timing Belt  - 2015-2021 Subaru STI

    26 In Stock

    T328RB

    Gates Racing Timing Belt - 2015-2021 Subaru STI

    $185.35
    DBA 4000 Series XS Crossdrilled Slotted KP Rotor (Front) - 2017-2021 Subaru STI

    5 In Stock

    DBA43050XS-10

    DBA 4000 Series XS Crossdrilled Slotted KP Rotor (Front) - 2017-2021 Subaru STI

    $463.21
    Enkei NT03+M Orange 18x9.5 +40 5x114.3 (Single Wheel) - 2015-2024 Subaru WRX / 2015-2021 STI / 2019-2024 Forester

    3658956540OR

    Enkei NT03+M Orange 18x9.5 +40 5x114.3 (Single Wheel) - 2015-2024 Subaru WRX / 2015-2021 STI / 2019-2024 Forester

    $419.40
    GrimmSpeed Pitch Stop Mount - 2015-2021 Subaru WRX / STI / 2016-2019 Crosstrek / 2004-2019 Forester / 2002-2019 Impreza

    49 In Stock

    122005

    GrimmSpeed Pitch Stop Mount - 2015-2021 Subaru WRX / STI / 2016-2019 Crosstrek / 2004-2019 Forester / 2002-2019 Impreza

    $109.00
    Seibon Carbon Fiber MB Style Rear Spats - 2015-2021 Subaru WRX / STI

    11 In Stock

    RL15SBIMP-MB

    Seibon Carbon Fiber MB Style Rear Spats - 2015-2021 Subaru WRX / STI

    5.0(1)
    $765.00

    Page 1 of 65