GFB 02-10 WRX/STI 2 Piece Under-Drive Pulley Kit w/ Belts (Crank & Alternator)GO FASTER ? ADD LIGHTNESS, GFB's Lightweight Pulley Kits offer sharper throttle response and faster acceleration by significantly reducing the rotating mass at the engine. Made from a single billet of 6061 T6 aluminium, then precision CNC machined to exacting tolerances, our pulley kits offer an exceptional bolt on performance advantage without the need for supporting mods or tuning This Part Fits: Year Make Model Submodel 2004 2005 Subaru Forester XT