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.

Hybrid GT2 spec intercooler kit - WRX (GRF)
Clutch kit Toyota ST215w Caldina Sports Ceramic 3 Puk
Lucas SAE30 Break In Oil 4.7L
BC Camshafts B16a B18c stage 2 / 2+ / 3 