2019 Subaru WRX STI Mods, Upgrades & Accessories

    WRX STI Upgrades by WRX STI Experts. 

    The aftermarket was full steam ahead for both the VB WRX and STI. This particular model was very popular among enthusiasts particularly the STI as it inherits the decorated EJ25, so performance products were quickly made available. However, there was an emphasis on the exterior as you could fit a very aggressive wheel size under those fender wells, and companies such as OLM went into overtime by developing all the products. For example, their S209 12-Piece Painted Matched Fender Flare Set provided the body with a wider stance. Seibon had several carbon fiber options that included their carbon fiber hoods, as well as their fenders. And APR offered more downforce with their Front Air Dam, as well as their GTC-300 Rear Wing.

    Going back to the wheel size, it was discovered that you could fit up to an 18x10.5 wide wheel with up to a 275/35/18 tire lowered on coilovers. To improve the handling, it is well-known that sway bars are one of the best investments for any generation of WRX and STI. Chassis bracing further tightened up the body to reduce body roll while sharpening the steering during fast corners. With upgrades that further increased the aerodynamic refinement combined with chassis reinforcement, the VB STI remained very competitive on weekend track days, while being a blast to have as a daily driver.

    Shop 2019 Subaru Wrx-sti Upgrades by Category

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    1758 Results

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

    7 In Stock

    ASM-TAC-731

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

    $169.15
    Invidia 3in Downpipe to 2.5in Exhaust Adapter - Subaru Models (Inc. 2004-2021 Subaru STI)

    3 In Stock

    HS02SWIAPD

    Invidia 3in Downpipe to 2.5in Exhaust Adapter - Subaru Models (Inc. 2004-2021 Subaru STI)

    $68.60
    Stoptech Street Front Brake Pads - 2018-2020 Subaru STI

    1 In Stock

    308.13650

    Stoptech Street Front Brake Pads - 2018-2020 Subaru STI

    $121.75
    Work Wheels Emotion CR Kiwami White 19x9.5 +38mm 5x114.3 (Single Wheel) - 2015-2024 Subaru WRX / 2015-2021 STI / 2019-2024 Forester

    4 In Stock

    WCK199538YWHT

    Work Wheels Emotion CR Kiwami White 19x9.5 +38mm 5x114.3 (Single Wheel) - 2015-2024 Subaru WRX / 2015-2021 STI / 2019-2024 Forester

    $678.07
    Boomba Racing STI 75mm DBW Throttle Body (Bolt On) - Natural Aluminum - 2004-2021 Subaru STI

    1000150100

    Boomba Racing STI 75mm DBW Throttle Body (Bolt On) - Natural Aluminum - 2004-2021 Subaru STI

    $878.00
    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
    Rays Gram Lights 57CR Gun Blue II 18x9.5 +38 5x114.3 (Single Wheel) - 2015-2024 Subaru WRX / 2015-2021 STI / 2019-2024 Forester

    69 In Stock

    WGCRX38EG2

    Rays Gram Lights 57CR Gun Blue II 18x9.5 +38 5x114.3 (Single Wheel) - 2015-2024 Subaru WRX / 2015-2021 STI / 2019-2024 Forester

    5.0(1)
    $570.09
    Volk Racing TE37SL Black Edition III 19x9.5 +38mm 5x114.3 (Single Wheel) - 2015-2024 Subaru WRX / 2015-2021 STI / 2019-2024 Forester

    WVD438EPB3

    Volk Racing TE37SL Black Edition III 19x9.5 +38mm 5x114.3 (Single Wheel) - 2015-2024 Subaru WRX / 2015-2021 STI / 2019-2024 Forester

    $969.56
    OLM Fog with High Beam Harness - 2015-2021 Subaru WRX / STI / 2014-2018 Forester / 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2020 Toyota 86 / 2013-2017 Crosstrek

    6 In Stock

    9026900000

    OLM Fog with High Beam Harness - 2015-2021 Subaru WRX / STI / 2014-2018 Forester / 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2020 Toyota 86 / 2013-2017 Crosstrek

    1.0(1)
    $69.00
    Killer B Motorsport Upper Coolant Reservoir w/ AN Fittings Black - 2002-2007 Subaru WRX / 2004-2021 STI

    UTCRV2AN-B

    Killer B Motorsport Upper Coolant Reservoir w/ AN Fittings Black - 2002-2007 Subaru WRX / 2004-2021 STI

    $219.00
    Competition Clutch Twin Disk Clutch Kit - 2015-2021 Subaru STI / 2004-2014 Impreza

    4-15031-C

    Competition Clutch Twin Disk Clutch Kit - 2015-2021 Subaru STI / 2004-2014 Impreza

    $2,080.09
    Eibach Pro Kit Performance Springs - 2015-2021 Subaru STI

    5 In Stock

    7728.140

    Eibach Pro Kit Performance Springs - 2015-2021 Subaru STI

    4.0(4)
    $355.00
    OLM Clear Tri-Bar Fog Light Bezel - 2018-2021 Subaru STI / 2018 WRX

    1 In Stock

    SB8001-BC1

    OLM Clear Tri-Bar Fog Light Bezel - 2018-2021 Subaru STI / 2018 WRX

    5.0(1)
    $315.00
    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
    Killer B 3-Inch to 3-Inch Coupler For Killer B Motorsport Extreme Flow HARD Turbo Inlet - 2002-2007 Subaru WRX / 2004-2021 STI

    TIEJC3

    Killer B 3-Inch to 3-Inch Coupler For Killer B Motorsport Extreme Flow HARD Turbo Inlet - 2002-2007 Subaru WRX / 2004-2021 STI

    $49.00
    DBA 4000 Series T3 Slotted KP Rotor Single (Rear) - 2017-2021 Subaru STI

    38 In Stock

    43051S-10

    DBA 4000 Series T3 Slotted KP Rotor Single (Rear) - 2017-2021 Subaru STI

    $270.21
    PERRIN Neon Yellow Round Oil Fill Cap - Subaru Models (Inc. 2015-2021 Subaru WRX / STI / 2014-2018 Forester / 2013-2017 Crosstrek / 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2020 Toyota 86)

    18 In Stock

    PSP-ENG-711NY

    PERRIN Neon Yellow Round Oil Fill Cap - Subaru Models (Inc. 2015-2021 Subaru WRX / STI / 2014-2018 Forester / 2013-2017 Crosstrek / 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2020 Toyota 86)

    $74.80
    Kartboy Battery Tie Down - 2015-2021 Subaru WRX / STI / 1998-2013 Forester / 1993-2014 Impreza / 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86

    91 In Stock

    KB-100-BT

    Kartboy Battery Tie Down - 2015-2021 Subaru WRX / STI / 1998-2013 Forester / 1993-2014 Impreza / 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86

    $45.36
    SSR GTX01 Dark Silver 18x9.5 +40 5x114.3 (Single Wheel) - 2015-2024 Subaru WRX / 2015-2021 STI / 2019-2024 Forester

    XA189504005GDK

    SSR GTX01 Dark Silver 18x9.5 +40 5x114.3 (Single Wheel) - 2015-2024 Subaru WRX / 2015-2021 STI / 2019-2024 Forester

    $595.26
    PERRIN Oil Cap (Blue) - Subaru Models (Inc. 2002-2024 WRX / 2004-2021 STI / 1998-2024 Forester / 2013-2024 BRZ)

    7 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

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