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.

BC Camshafts B16a B18c stage 2 / 2+ / 3
Radiator Cap - Violence - small head 1.3bar
BC Camshafts 3SGTE stage 2 / 3
BC Camshafts 4G63 EVO 4-8 stage 2 / stage 3 / 3+ 