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2008-2014 STI Engine

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  • Sale Sale

    GFB3 pc Underdrive/Non-Underdrive Pulley Kit 2008-2014 WRX / 2008-2021 STI

    Go Fast Bits
    $365.00
    $365.00 - $365.00
    $365.00
    $328.50
    $328.50 - $328.50
    $328.50
      Lease to own   Pay as low as   $13.27/week

    It might be hard to imagine how reducing the mass of a pulley makes a car go faster, but accelerating a heavy factory pulley from say 3000-7000 RPM...

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  • Sold out

    GFB Mach 2 TMS Recirculating Diverter Valve 2004-2021 STI

    Go Fast Bits
    $212.00
    $212.00 - $212.00
    $212.00
    $190.80
    $190.80 - $190.80
    $190.80
      Lease to own   Pay as low as   $7.71/week

    Blow off sound not to your taste? Want something as “sleeper” as possible? Don’t want your partner to know you’ve stuck a turbo on the daily (again...

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  • Sale Sale

    GFB 2 Piece Under-Drive Pulley Kit w/ Belts (Crank & Alternator) 2002-2021 WRX/STI

    Go Fast Bits
    $260.00
    $260.00 - $260.00
    $260.00
    $234.00
    $234.00 - $234.00
    $234.00
      Lease to own   Pay as low as   $9.45/week

    One of the ways that you can improve the response in your engine is by adding a lightweight pulley set. Lightweight pullies have less rotational ma...

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  • Sale Sale

    GFB TMS Respons Blow Off Valve Kit 2002-2007 WRX / 2004-2021 STI

    Go Fast Bits
    $342.00
    $342.00 - $342.00
    $342.00
    $307.80
    $307.80 - $307.80
    $307.80
      Lease to own   Pay as low as   $12.43/week

    If cars like yours typically suffer issues such as backfiring and stalling when using a fixed-ratio atmosphere-venting BOV, the Respons can help. B...

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  • Sale Sale

    GFB Deceptor Pro Blow Off Valve Kit 2002- 2007 WRX / 2004-2021 STI

    Go Fast Bits
    $504.00
    $504.00 - $504.00
    $504.00
    $453.60
    $453.60 - $453.60
    $453.60
      Lease to own   Pay as low as   $18.32/week

    Control the sound of your BOV "ON-THE-FLY." Go on, admit it. There are times you wish you could have that signature turbo blow off sound, but you'r...

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