The Cusco lightweight aluminum pulley set for Subaru STI with EJ20/EJ25 engines is a blue-finished pulley kit specified for those engine platforms. Described as lightweight aluminum, the set is intended as an engine accessory for Subaru STI EJ20 and EJ25 applications where lightweight aluminum pulleys are required, supplied in a factory-style blue finish.
Cusco Subaru STI EJ20 / EJ25 Light Weight Aluminum Pulley Set - Blue