Lightweight Pulley Kit for BRZ/Scion

GFB Performance Underdrive Pulley reduces parasitic load on the engine by decreasing the rotational mass and drive ratio of accessory pulleys. This lightweight CNC-machined aluminium pulley frees up additional power by reducing the energy required to drive alternators, power steering pumps, and air conditioning compressors. Suitable for performance street and track builds seeking incremental power gains. Compatible with specific vehicle applications as listed — direct replacement for OEM pulley with no machining or modification required.