Cusco Aluminum Pulley Set 2002-2014 WRX / 2004-2021 STI / 2005-2009 LGT

Enhance your Subaru WRX or WRX STI’s engine response with the Cusco Aluminum Pulley Set, designed to reduce rotational mass and boost acceleration. This premium pulley set replaces heavier factory components with lightweight aluminum alternatives, improving throttle response and reducing engine stress for a more responsive drive.

The kit includes a crank pulley weighing just 1.74 lbs (790 g) compared to the stock 5.07 lbs (2.3 kg), and an alternator pulley at 0.16 lbs (76 g) versus the stock 0.66 lbs (300 g). Both pulleys are crafted from high-grade metal and finished with Cusco’s signature blue powder coat, offering superior corrosion resistance and a clean engine bay look. Installation typically takes about two hours.

Ideal for Subaru enthusiasts seeking performance upgrades for 2002-2014 WRX, 2004-2021 WRX STI, and 2005-2009 Legacy GT models, this pulley set delivers tangible improvements in throttle feel and acceleration.