GFB 08+ WRX/STi / 09+ Forester / 03-09 LGT 3 pc Underdrive/Non-Underdrive Pulley Kit
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 in a second or two saps a measurable amount of torque. GFB Lightweight Pulleys reduce inertia by up to 85 percent, so most of the torque that used to accelerate the pulley can now be applied to the wheels.This Part Fits: Year Make Model Submodel 2009 Subaru Forester XT 2009-2010 Subaru Forester XT Limited 2010-2013 Subaru Forester XT Premium 2011-2013 Subaru Forester XT Touring 2009-2010 Subaru Impreza 2.5 GT 2008-2014 Subaru Impreza WRX 2010-2014 Subaru Impreza WRX Limited 2009-2014 Subaru Impreza WRX Premium 2008-2014 Subaru Impreza WRX STI 2011-2014 Subaru Impreza WRX STI Limited 2010 Subaru Impreza WRX STI Special Edition 2006-2009 Subaru Legacy 2.5i 2007-2009 Subaru Legacy 2.5i Limited 2007-2009 Subaru Legacy 2.5i Special Edition 2009 Subaru Legacy 3.0 R 2008-2009 Subaru Legacy 3.0 R Limited 2003-2006