These light weight alloy CnC machined pullies will provide reduced rotating mass compared to the stock pulley and save you precious horsepower throughout the rev range. They also under-drive attached accessories. Suit 4G93 as found in the lancer GSR and Libero.

4G63 Turbo dump pipe EVO 4-6 Kinugawa
Lengthened wheel studs 1.25P 45mm
BC cam gears Toyota 2JZGTE 