Go Fast Bits 2 Piece Under-Drive Pulley Kit w/ Belts Subaru WRX / STI / Legacy GT / Forester XT 2002-2021

Want to boost your engine's response? A lightweight pulley set is the answer! Compared to OEM pulleys, these lightweight ones have less rotational mass. This means better engine response, giving you a small but noticeable increase in both power and torque. Part #: 2001. This Go Fast Bits 2-Piece Underdrive Pulley Kit includes alternator and crank pulleys. Crafted from aircraft-grade aluminum, they come in an anodized black finish. This not only looks great in your engine bay but also protects against rust and corrosion. The kit also comes with a set of serpentine belts, so it's ready for installation right away. Fitment: 2002 - 2014 WRX, 2004 - 2019 STI, 2005 - 2009 Legacy GT, 2004 - 2013 Forester XT.

Using this pulley kit is easy. First, make sure your engine is off and cooled down. Then, carefully remove the old pulleys and install the new ones from the kit. Attach the included serpentine belts following the correct routing. When installing, be gentle to avoid any damage to the pulleys or belts. As for maintenance, regularly check the belts for wear and tear. If you notice any cracks or fraying, replace them right away. Also, keep an eye on the pulleys to ensure they're not loose or making strange noises. If you do encounter any issues, it's best to consult a professional mechanic.