GFB 99-00 Subaru WRX/Forrester GT Light-Weight Engine 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
1999-2001	Subaru	Impreza	L
1999-2002	Subaru	Impreza	Outback
1998-2002	Subaru	Impreza	RS
2002	Subaru	Impreza	TS