This is GNP's Lightweight Pulley Combo
Now that we have produced two lightweight pulleys that work very well together for your Subaru by reducing rotational mass only. It's time to offer them together at a discounted price of course.

What these lightweight pulleys do is remove rotational mass from your motor, allowing it (and you), to accelerate quicker. These are not underdriven pulleys, you can use the stock belts.

GNP's lightweight crank and alternator pulleys have been CAD designed and CNC milled out of T6061 aluminum then anodized for a great finish. All of GNP's lightweight crank pulleys also get dynamically balanced to 8200 RPM to ensure problem free running.
Available in 3 colours Red, Blue and Black.

What the combo is:
1-GNP's lightweight crank pulley
1-GNP's lightweight alternator pulley
Free Canadian Shipping.

This combo will fit:
Impreza- 1993-2019
Wrx - 2002-2014
Sti - 2004-2019
Legacy GT 2005-2009
Outback XT 2005-2009
Forester XT 2004-2008
XV Crosstrek 2013-2014