2005 Subaru Impreza WRX STI Mods, Upgrades & Accessories

    WRX STI Upgrades by WRX STI Experts. 

    A wild year after the release of the 2004 STI, Subaru made subtle changes that made the transition of the STI simplified especially for the aftermarket. The body remains the same with the coined Blobeye headlights, the large rear wing, and it still included BBS wheels. However, the 2005 STI went with a different knuckle design in the suspension converting the wheel pattern to a 5x114.3 as opposed to the earlier 2004 STI models that had the 5x100 wheel pattern. Because of these reasons, suspension upgrades such as Faction Fab’s F-Spec Coilovers, and the factory exclusive larger Brembo calipers that will fit on the 2005 STI, would not fit on the 2004 model because of the 5x100 knuckle design.

    The engine and drivetrain remained the same with the 2.5-liter flat four engine. And after a year, exhaust companies were off to the races as the EJ25 created an intoxicating now flagship Subaru rumble. Popular modes included but are not limited to the Invidia Q300 Cat-Back Exhaust System, IAG Performance V3 Steet Series Air Oil Separator Kit, and the COBB Tuning Adjustable Short Throw Shifter just to name a few that made the driving experience a little more exciting.

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    1195 Results

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

    5 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
    ACT Mod-Twin 225 XT Sprung Street Clutch Kit - 2004-2021 Subaru STI

    14 In Stock

    T2S-S05

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

    $2,006.00
    Koyo Aluminum Racing Radiator Manual Transmission - 2003-2007 Subaru WRX / STI

    4 In Stock

    VH091672

    Koyo Aluminum Racing Radiator Manual Transmission - 2003-2007 Subaru WRX / STI

    $538.20
    PERRIN Front Tow Hook Kit (Red) - 2002-2007 Subaru WRX / STI

    8 In Stock

    PSP-BDY-230RD

    PERRIN Front Tow Hook Kit (Red) - 2002-2007 Subaru WRX / STI

    $89.25
    STI 1.3 Bar Radiator Cap - 2015-2021 Subaru WRX / STI

    ST4511355010

    STI 1.3 Bar Radiator Cap - 2015-2021 Subaru WRX / STI

    5.0(1)
    $91.95
    OVERTAKE Up-Pipe Hardware Kit - 2002-2014 Subaru  WRX / 2004-2021 STI

    OVERTAKE Up-Pipe Hardware Kit - 2002-2014 Subaru WRX / 2004-2021 STI

    $29.00
    Tomei ARMS BX8265 Turbo - 2002-2007 Subaru WRX / 2004-2021 STI

    TB403A-SB01C

    Tomei ARMS BX8265 Turbo - 2002-2007 Subaru WRX / 2004-2021 STI

    $1,780.00
    ACT Heavy Duty Monoloc Rigid Race 6 Pad Clutch - 2004-2021 Subaru STI

    1 In Stock

    SB10-HDR6

    ACT Heavy Duty Monoloc Rigid Race 6 Pad Clutch - 2004-2021 Subaru STI

    $799.00
    COBB 6-Speed Front Shifter Bushing - 2015-2021 Subaru STI / 2004-2014 Impreza / 2007-2009 Legacy

    4 In Stock

    213320

    COBB 6-Speed Front Shifter Bushing - 2015-2021 Subaru STI / 2004-2014 Impreza / 2007-2009 Legacy

    5.0(1)
    $54.00
    GSC Power-Division Stainless Steel Exhaust Valves +1mm - 2002-2014 Subaru WRX / 2004-2021 STI

    9 In Stock

    2013-8

    GSC Power-Division Stainless Steel Exhaust Valves +1mm - 2002-2014 Subaru WRX / 2004-2021 STI

    $147.73
    Company23 Small Idler Longer Pulley Bolt - Subaru DOHC EJ Turbo Models (inc. 2015-2021 STI / 2004-2012 Forester / 2003-2014 Impreza)

    583

    Company23 Small Idler Longer Pulley Bolt - Subaru DOHC EJ Turbo Models (inc. 2015-2021 STI / 2004-2012 Forester / 2003-2014 Impreza)

    $5.38
    Sparco Seat Base Driver Side - 2002-2007 Subaru WRX / STI / 1993-2007 Impreza

    9 In Stock

    600SB019L

    Sparco Seat Base Driver Side - 2002-2007 Subaru WRX / STI / 1993-2007 Impreza

    $199.00
    DarkMatterX Shift Boot - Black / Suede - 2005-2007 Subaru WRX / Impreza

    DarkMatterX Shift Boot - Black / Suede - 2005-2007 Subaru WRX / Impreza

    $65.00
    IAG Competition Series 6 Speed Transmission Mount - 2015-2021 Subaru STI

    DRV-2111

    IAG Competition Series 6 Speed Transmission Mount - 2015-2021 Subaru STI

    $299.99
    Cusco 3 Piece Engine and Transmission Mount Set - 2015-2021 Subaru STI / 2002-2005 Impreza

    7 In Stock

    660911SET

    Cusco 3 Piece Engine and Transmission Mount Set - 2015-2021 Subaru STI / 2002-2005 Impreza

    $365.00
    FactionFab Subaru 5x100 / 5x114.3 3mm 6061-T6 Forged Spacer Set - 2015-2024 Subaru WRX / 2015-2021 Subaru STI / 2016-2021 Crosstrek / 1999-2024 Forester / Impreza / 2013-2016 Scion FR-S / 2013-2024 Subaru BRZ / 2017-2020 Toyota 86 / 2022-2024 GR86

    18 In Stock

    1.10215.1

    FactionFab Subaru 5x100 / 5x114.3 3mm 6061-T6 Forged Spacer Set - 2015-2024 Subaru WRX / 2015-2021 Subaru STI / 2016-2021 Crosstrek / 1999-2024 Forester / Impreza / 2013-2016 Scion FR-S / 2013-2024 Subaru BRZ / 2017-2020 Toyota 86 / 2022-2024 GR86

    $45.00
    Injector Dynamics Side / Top Feed Conversion Line Kit - 2004-2006 Subaru STI / 2005-2006 Legacy GT

    6 In Stock

    SFC FLK

    Injector Dynamics Side / Top Feed Conversion Line Kit - 2004-2006 Subaru STI / 2005-2006 Legacy GT

    $250.00
    EBC Brakes Ultimax OEM Replacement Front Brake Pads - 2004-2017 Subaru STI / Mitsubishi Evo / OEM Brembo Applications

    6 In Stock

    UD1001

    EBC Brakes Ultimax OEM Replacement Front Brake Pads - 2004-2017 Subaru STI / Mitsubishi Evo / OEM Brembo Applications

    $77.06
    Hawk Street Brake Pads (Front) - 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86

    30 In Stock

    HB432F.661

    Hawk Street Brake Pads (Front) - 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86

    $151.19
    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

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