GFB Lightweight Crank Pulley - Subaru Impreza WRX STI GD/VA
The GFB Lightweight Crank Pulley allows for sharper throttle response (particularly off boost), as well as providing a large saving of rotating mass over the factory pulley, without sacrificing strength or reliability!
Like all GFB lightweight pulleys, this one begins life as a single 6061 aluminium alloy billet, and is then precision CNC machined to exacting tolerances. GFB then anodize it black for a stealthy appearance and superior wear resistance.
Shaped to look exactly like the factory Subaru pulley, so it goes unnoticed in the engine bay and it even uses the factory belts.
Weighs in at 578g, compared to the factory 2180g on the WRX and factory 2575g on the STi.
Suitable for all Subaru EJ-series engines, and does not require additional belts.
GFB Lightweight Crank Pulley features:
- Sharper throttle response (particularly off boost)
- Engine feels more willing to rev
- Stronger "urge"