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

Using this Go Fast Bits pulley kit is straightforward. First, make sure your engine is cool before starting the installation. Remove the old pulleys and belts carefully. Then, install the new alternator and crank pulleys from the kit, making sure they are properly aligned. Attach the included serpentine belts following the correct routing diagram for your Subaru model. As for maintenance, check the belts regularly for signs of wear, like cracks or fraying. Replace them if needed. Inspect the pulleys too. If you notice any damage or excessive rust, it's a good idea to replace the affected parts. And don't forget to keep the anodized black finish clean to maintain its protective properties and good looks.