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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    1249 Results

    Torque Solution Cylinder 4 Coolant Mod - 2002-2014 Subaru WRX / 2004-2021 Subaru STI

    15 In Stock

    TS-SU-585

    Torque Solution Cylinder 4 Coolant Mod - 2002-2014 Subaru WRX / 2004-2021 Subaru STI

    5.0(1)
    $88.88
    PERRIN Pitch Stop Mount (Black) - Subaru Models (Inc. 2002-2024 Subaru WRX / 2004-2021 STI / 1993-2024 Impreza / 2019-2024 Ascent / 2013-2024 Crosstrek / 2005-2009 & 2020-2024 Legacy / Outback)

    34 In Stock

    PSP-DRV-101BK

    PERRIN Pitch Stop Mount (Black) - Subaru Models (Inc. 2002-2024 Subaru WRX / 2004-2021 STI / 1993-2024 Impreza / 2019-2024 Ascent / 2013-2024 Crosstrek / 2005-2009 & 2020-2024 Legacy / Outback)

    5.0(1)
    $99.45
    DeatschWerks Fuel Injectors Top Feed 650cc - 2002-2014 Subaru WRX / 2007-2021 STI

    5 In Stock

    17U-07-0650-4

    DeatschWerks Fuel Injectors Top Feed 650cc - 2002-2014 Subaru WRX / 2007-2021 STI

    $399.00
    ISC 5x114 Wheel Spacers (15mm and 25mm) - 2015-2024 Subaru WRX / 2015-2021 STI / 2019-2024 / 2005-2014 Impreza

    14 In Stock

    WS5X11415B

    ISC 5x114 Wheel Spacers (15mm and 25mm) - 2015-2024 Subaru WRX / 2015-2021 STI / 2019-2024 / 2005-2014 Impreza

    $135.00
    Turbosmart Recirculating Blow Off Valve Kompact Plumb Back Black - 2002-2007 Subaru WRX / 2004-2014 Subaru STI / 2006-2008 Subaru Forester XT

    7 In Stock

    TS-0203-1215

    Turbosmart Recirculating Blow Off Valve Kompact Plumb Back Black - 2002-2007 Subaru WRX / 2004-2014 Subaru STI / 2006-2008 Subaru Forester XT

    3.0(1)
    $186.95
    Enkei RPF1 Blue 17x9 +35 5x100 (Single Wheel) - 2013-2024 Subaru BRZ / Scion FR-S / Toyota GR86 / 2014-2018 Subaru Forester

    ENK3797908035BL

    Enkei RPF1 Blue 17x9 +35 5x100 (Single Wheel) - 2013-2024 Subaru BRZ / Scion FR-S / Toyota GR86 / 2014-2018 Subaru Forester

    $365.14
    Rays Gram Lights 57CR Eternal Blue Pearl 18x9.5 +22 5x114.3 (Single Wheel) - 2015-2024 Subaru WRX / 2015-2021 STI / 2019-2024 Forester

    WGCRX22EEBP

    Rays Gram Lights 57CR Eternal Blue Pearl 18x9.5 +22 5x114.3 (Single Wheel) - 2015-2024 Subaru WRX / 2015-2021 STI / 2019-2024 Forester

    $609.60
    Killer B Motorsport 4-1 Holy Header 2-Bolt w/EGT Bung  - 2002-2014 Subaru WRX / 2004-2021 STI / 2004-2013 Forester XT

    HH-2BOLT-EGT

    Killer B Motorsport 4-1 Holy Header 2-Bolt w/EGT Bung - 2002-2014 Subaru WRX / 2004-2021 STI / 2004-2013 Forester XT

    $1,779.00
    Manley Performance Platinum Series Piston Set 99.55mm 8.5:1 - Subaru Models (inc. 2006-2014 Subaru WRX / 2004-2021 Subaru STI)

    4 In Stock

    612001C-4

    Manley Performance Platinum Series Piston Set 99.55mm 8.5:1 - Subaru Models (inc. 2006-2014 Subaru WRX / 2004-2021 Subaru STI)

    $699.23
    Overtake Adjustable Exhaust Hanger (Single) - 15mm - 1993-2007 Subaru Impreza / WRX / STi

    A10465

    Overtake Adjustable Exhaust Hanger (Single) - 15mm - 1993-2007 Subaru Impreza / WRX / STi

    $13.00
    Killer B Motorsport Upper Coolant Reservoir v2 with Barbed Fittings Black Finish - 2002-2007 Subaru WRX / 2004-2021 STI

    7 In Stock

    UTCRV2BA-B

    Killer B Motorsport Upper Coolant Reservoir v2 with Barbed Fittings Black Finish - 2002-2007 Subaru WRX / 2004-2021 STI

    $197.00
    Killer B Motorsport Oil Pickup And Baffle Combo - 2002-2014 Subaru WRX / 2004-2021 STI / 2004-2008 Forester XT

    070-EJWT

    Killer B Motorsport Oil Pickup And Baffle Combo - 2002-2014 Subaru WRX / 2004-2021 STI / 2004-2008 Forester XT

    $219.00
    Killer B Motorsport Cast Performance Oil Pan Package with High Flow Pick up & Baffle - 2002-2014 Subaru WRX / 2004-2021 Subaru STI

    PPBC-HF

    Killer B Motorsport Cast Performance Oil Pan Package with High Flow Pick up & Baffle - 2002-2014 Subaru WRX / 2004-2021 Subaru STI

    $725.00
    ACT Mod-Twin 225 XT Sprung Race Clutch Kit - 2004-2021 Subaru STI

    4 In Stock

    T2R-S05

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

    $2,360.00
    Manley Performance Platinum Series Piston Set 100mm 8.5:1 - Subaru Models (inc. 2006-2014 Subaru WRX / 2004-2021 Subaru STI)

    11 In Stock

    612005C-4

    Manley Performance Platinum Series Piston Set 100mm 8.5:1 - Subaru Models (inc. 2006-2014 Subaru WRX / 2004-2021 Subaru STI)

    $699.23
    DBA 5000 Series 2 Piece Drilled and Slotted Rotor (Front) - 2015-2017 Subaru STI / 2004-2014 Impreza

    9 In Stock

    5654GLDXS-10

    DBA 5000 Series 2 Piece Drilled and Slotted Rotor (Front) - 2015-2017 Subaru STI / 2004-2014 Impreza

    $583.21
    StopTech Stainless Steel Brake Lines (Front) - 2015-2021 Subaru WRX / STI

    56 In Stock

    950.47006

    StopTech Stainless Steel Brake Lines (Front) - 2015-2021 Subaru WRX / STI

    $115.89
    ACT Release Bearing - 2015-2021 Subaru STI / 2004-2005 Forester / 2002-2014 Impreza

    22 In Stock

    RB601

    ACT Release Bearing - 2015-2021 Subaru STI / 2004-2005 Forester / 2002-2014 Impreza

    $103.00
    Killer B Motorsports 3-Piece Super G-EJ Series High Flow Pickup & Baffle Performance Oil Pan - 2002-2014 Subaru WRX / 2004-2021 STI / 2004-2008 Forester

    2 In Stock

    PPBC-HFG

    Killer B Motorsports 3-Piece Super G-EJ Series High Flow Pickup & Baffle Performance Oil Pan - 2002-2014 Subaru WRX / 2004-2021 STI / 2004-2008 Forester

    $918.00
    Project Kics 5x114.3 Wide Tread Wheel Spacers (15mm, 20mm) - 2015-2024 Subaru WRX / 2015-2021 STI / 2019-2024 Forester / 2005-2014 Impreza

    16 In Stock

    W5125W356

    Project Kics 5x114.3 Wide Tread Wheel Spacers (15mm, 20mm) - 2015-2024 Subaru WRX / 2015-2021 STI / 2019-2024 Forester / 2005-2014 Impreza

    $256.50

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