SET YOUR CAR
FREE SHIPPING
On orders over $200
TALK TO A PARTS EXPERT
RALLYSPORT GUARANTEE
100% Money Back on Select Parts
Product images
Product Media
Go Fast Bits Underdrive Pulley Kit (Part Number: )
Go Fast Bits Underdrive Pulley Kit (Part Number: )
Go Fast Bits Underdrive Pulley Kit (Part Number: )
Go Fast Bits Underdrive Pulley Kit (Part Number: )
Go Fast Bits Underdrive Pulley Kit (Part Number: )
Go Fast Bits Underdrive Pulley Kit (Part Number: )
Go Fast Bits Underdrive Pulley Kit (Part Number: )
Go Fast Bits Underdrive Pulley Kit (Part Number: )
Go Fast Bits Underdrive Pulley Kit (Part Number: )
Go Fast Bits Underdrive Pulley Kit
Subaru Models (inc. 2008-2014 WRX / 2008+ STI)
Read 3 Reviews | 17 Q&As
Part # 2014
$301.91
msrp: $335.45

Only 3 left!

Features & Product Details

RallySport Direct is proud to carry a great selection of automotive performance upgrades and accessories brought to you by Go Fast Bits. 

Here, you are looking at the GFB Pulley Kit. This kit consists of a lighter crank, alternator, and power steering pullies that save weight and rotational mass to improve the engine response.

DETAILS:

  • Lightweight aluminum construction
  • Crank pulley weighs .86 lbs
  • Power steering pulley weighs .37 lbs with 18% underdrive
  • Alternator weighs .14 lbs with 16% underdrive
  • Total mass of GFB pulley kit is 1.38 lbs
  • Mass savings for STI models: 5.31 lbs
  • Mass savings for WR models: 4.43 lbs
  • AC compressor will still operate at normal speeds
  • Includes new belt
  • Black finish
  •  

     

    Specifications

    Brand: Go Fast Bits
    Color: Black
    Location: Crank, Alternator and Power Steering
    Material: Aluminum
    Pulley Ratio: Underdrive
    Weight: Multiple
    Belt Included: Yes
    Mfgr. Warranty: 1 Year
    Condition: New Product
    Return Policy:

    RallySport Guarantee - 30 Days


    Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

    RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

    The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
    RallySport Guarantee

    PEOPLE WHO VIEWED THIS ITEM ALSO VIEWED

    REVIEWS & CUSTOMER MEDIA

    3 Reviews
    5 out of 5 Stars
    5 Stars
    (3)
    4 Stars
    (0)
    3 Stars
    (0)
    2 Stars
    (0)
    1 Stars
    (0)
    Customer Photos and Videos
    No user media. You can upload a photo or video of your install by posting a review.
    Great Upgrade! 2 years ago
    5out of 5stars

    Looks Great! Really Light! I Really Like it!
      
    Was this review helpful?
    Impressive! 4 years ago
    5out of 5stars

    This kit will leave you astonished! It is super high quality and light weight... I had the perrin light weight installed on my 2008 STi and it was really good. I found the Go Fast Bits kit by accident and I kept thinking.... Hmm would 3 light weight pulleys be better than one? Sure is! Plus the quality and looks defineyely stands out. I love this kit, you'll feel the difference even going from one light weight pulley to this complete kit.. Now if you're in the market for a light weight pulley don't even look further.. this is the right kit to go with! Drive safe lol
      
    Was this review helpful?
    Why do just 1 pulley when you can replace them all?  5 years ago
    5out of 5stars

    The GFB pulley kit replaces the Crank, PS, and Alt pulley's with lightweight aluminum units that are of the highest quality. The real benefit is weight savings and when I weighed them in comparison to their stock counterparts I confirmed RSD's findings of more than a 5lb total weight savings on my 2008 STi. Comes with belts and install instructions. Oh and the packaging is damn impressive too! Buy them now!
      
    Was this review helpful?

    QUESTIONS & ANSWERS

    • Q: Power steering pump underdriven  SubÉric1 month ago

      Is smaller power steering pulley mean that it will be harder or more difficult to turn in the car, steering wheel effort?
      • 1 of 1 people found the following answer helpful

        A:  This will make the steering tighter and heavier yes, but it probably won't be too much of a difference

        Devan M. @ RallySport Direct 29 days ago  
          
        Was this answer helpful?
    • Q: Power Steering Pump Pulley Size  ecornell10 months ago

      Is the Power Steering Pump Pulley the same size as the stock? Height and Width?
      • 0 of 0 people found the following answer helpful

        A:  We do not have the specific measurements of this guy but it is smaller than the OEM pulley for sure and needs to only be used with this kit.

        Megan L. @ RallySport Direct 8 months ago  
          
        Was this answer helpful?
    • Q: Confused   Stephen1 year ago

      Why does it say it won't fit on a 2.5i when it's still an ej25 ? Is that true ? I am looking for upgrades and a full kit would help but don't want to waste money if it's true.
      • 0 of 0 people found the following answer helpful

        A:  Unfortunately, this is not a kit that GFB confirms to fit the 2.5i.

        Megan L. @ RallySport Direct 1 year ago  
          
        Was this answer helpful?
      • 0 of 0 people found the following answer helpful

        A:  Our 2.5i has an EJ253 opposed to the WRX and STi's EJ255. I'm not sure if this has anything to do with it but I'm hoping that a confirmed fit is possible as well. One of us has to try it eventually. 😂

        Streamline @
          
        Was this answer helpful?
    • Q: installation  luckitiluc3 years ago

      how long should it takes to install all 3pulleys? and is it better to remove the bumper?
      • 0 of 0 people found the following answer helpful

        A:  The install should typically take 1-2 hours and there is no need to remove the bumper.

        Brady R @ RallySport Direct 3 years ago  
          
        Was this answer helpful?
    • Q: fitting  luckitiluc3 years ago

      does this fit on a subaru sti 15?
      • 0 of 0 people found the following answer helpful

        A:  This kit does fit the 2015 STI as per the application list on the left hand side of the page.

        Connor M. @ RallySport Direct 3 years ago  
          
        Was this answer helpful?

    This Part Fits

    Subaru Impreza
    WRX Hatchback
    2008 Subaru Impreza WRX Hatchback
    2009 Subaru Impreza WRX Hatchback
    2010 Subaru Impreza WRX Hatchback
    2011 Subaru Impreza WRX Hatchback
    2012 Subaru Impreza WRX Hatchback
    2013 Subaru Impreza WRX Hatchback
    2014 Subaru Impreza WRX Hatchback
    WRX Limited Hatchback
    2010 Subaru Impreza WRX Limited Hatchback
    2011 Subaru Impreza WRX Limited Hatchback
    2012 Subaru Impreza WRX Limited Hatchback
    2013 Subaru Impreza WRX Limited Hatchback
    2014 Subaru Impreza WRX Limited Hatchback
    WRX Limited Sedan
    2010 Subaru Impreza WRX Limited Sedan
    2011 Subaru Impreza WRX Limited Sedan
    2012 Subaru Impreza WRX Limited Sedan
    2013 Subaru Impreza WRX Limited Sedan
    2014 Subaru Impreza WRX Limited Sedan
    WRX Premium Hatchback
    2010 Subaru Impreza WRX Premium Hatchback
    2011 Subaru Impreza WRX Premium Hatchback
    2012 Subaru Impreza WRX Premium Hatchback
    2013 Subaru Impreza WRX Premium Hatchback
    2014 Subaru Impreza WRX Premium Hatchback
    WRX Premium Sedan
    2010 Subaru Impreza WRX Premium Sedan
    2011 Subaru Impreza WRX Premium Sedan
    2012 Subaru Impreza WRX Premium Sedan
    2013 Subaru Impreza WRX Premium Sedan
    2014 Subaru Impreza WRX Premium Sedan
    WRX STI Hatchback
    2008 Subaru Impreza WRX STI Hatchback
    2009 Subaru Impreza WRX STI Hatchback
    2010 Subaru Impreza WRX STI Hatchback
    2011 Subaru Impreza WRX STI Hatchback
    2012 Subaru Impreza WRX STI Hatchback
    2013 Subaru Impreza WRX STI Hatchback
    2014 Subaru Impreza WRX STI Hatchback
    WRX STI Limited Hatchback
    2011 Subaru Impreza WRX STI Limited Hatchback
    2012 Subaru Impreza WRX STI Limited Hatchback
    2013 Subaru Impreza WRX STI Limited Hatchback
    2014 Subaru Impreza WRX STI Limited Hatchback
    WRX STI Limited Sedan
    2011 Subaru Impreza WRX STI Limited Sedan
    2012 Subaru Impreza WRX STI Limited Sedan
    2013 Subaru Impreza WRX STI Limited Sedan
    2014 Subaru Impreza WRX STI Limited Sedan
    WRX STI Sedan
    2011 Subaru Impreza WRX STI Sedan
    2012 Subaru Impreza WRX STI Sedan
    2013 Subaru Impreza WRX STI Sedan
    2014 Subaru Impreza WRX STI Sedan
    WRX STI Special Edition Hatchback
    2010 Subaru Impreza WRX STI Special Edition Hatchback
    WRX Sedan
    2008 Subaru Impreza WRX Sedan
    2009 Subaru Impreza WRX Sedan
    2010 Subaru Impreza WRX Sedan
    2011 Subaru Impreza WRX Sedan
    2012 Subaru Impreza WRX Sedan
    2013 Subaru Impreza WRX Sedan
    2014 Subaru Impreza WRX Sedan