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.

Kinugawa Japan 20G upgrade kit for EVO 1-3 TD05
Clutch kit Toyota ST215w Caldina Sports Ceramic 3 Puk
Delta fin Intercooler - 300x160x65
Hybrid GT2 spec intercooler kit - WRX (GRF)
BC Camshafts B18a B18b stage 2 / 2+ / 3 