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GFB Lightweight Underdrive 3 Pulley Kit

Subaru WRX 03-07/STI 03-07/FXT 03-08
$378.00
RRP $420.00 (Save 10%)
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Description
 

GFB lightweight pulley kits are made from aircraft-grade 6061-T6 aluminium and offer faster acceleration through significant weight reduction on the crankshaft.

Most of our kits are underdriven, which means the accessories are driven slightly slower to reduce parasitic losses. GFB pulley kits are designed to improve acceleration by reducing the rotational mass (inertia) on the crankshaft as well as parasitic loads from the driven accessories. The effect is similar to a lighter flywheel, and the engine feels more lively and willing to rev.

We know that people are sometimes concerned about possible adverse effects of lightweight pulleys and underdriving, but rest assured we have done our homework! The underdrive ratios have been optimised to ensure there are NO adverse effects on the performance of the accessories, and whilst it is true that some engine types do suffer harmonic issues from lightweight pulleys, we steer clear of those. The kits we release are thoroughly application tested and do NOT cause engine damage in the short or long term.

 
Kit Includes:
  • (1) Crank Pulley
  • (1) Alternator Pulley
  • (1) Power Steering Pulley
  • (2) Belts

 

Vehicle Fitment:

  • 2003-2005 Subaru WRX GD/GG  Blob Eye (EJ20)
  • 2006-2007 Subaru WRX GD/GG Hawk Eye (EJ25)
  • 2003-2005 Subaru STI GDB Blob Eye (EJ20)
  • 2006-2007 Subaru STI GDB Hawk Eye (EJ25)
  • 2003-2008 Subaru Forester XT SH (EJ25)
 

Fitment Table