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.

Yellowspeed Brake Kit 356mm 6-pot (18") Front
Clutch kit Subaru WRX/STI GDA\GDB Sport Ceramic
BC Camshafts 1JZGTE stage 2 / 3 