GFB Lightweight Pulley Kit W/Belt – 2004-2007 Subaru STi & 2002-2007 WRX


Installation Instructions & Videos

Installation Instructions

SKU: 2010 Category: Tags: , , Brand:


Like all GFB lightweight pulleys, these begin life as a single 6061-T6 aluminium alloy billet, which is then precision CNC machined to exacting tolerances. We then anodize them black for a stealthy appearance and superior wear resistance. This kit consists of a lighter crank, alternator, and power steering pullies that save weight and rotational mass to improve the engine response


  • Lightweight aluminum construction
  • Crank pulley weighs .86 lbs
  • Power steering pulley weighs .37 lbs with 18% underdrive
  • Alternator pulley 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 WRX models: 4.43 lbs
  • AC compressor will still operate at normal speed
  • Black finish

Additional information

Weight1.5 kg
Dimensions17 × 17 × 9 cm


There are no reviews yet.

Be the first to review “GFB Lightweight Pulley Kit W/Belt – 2004-2007 Subaru STi & 2002-2007 WRX”

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.


Models suitable for this product

SubaruImpreza2002 - 2007WRX
SubaruImpreza2004 - 2007WRX STi
SubaruWRX2002 - 2007
SubaruWRX STi2004 - 2007

Got something to discuss?