Like all GFB lightweight pulleys, this one begins life as a single 6061 T6 aluminum alloy billet, and is then precision CNC machined to exacting tolerances. Next, it’s anodized black for a stealthy appearance and superior wear resistance. This results in a large saving of 1.4kg of rotating mass over the factory pulley, without sacrificing strength or reliability.
Like all GFB lightweight pulleys, you can feel the improvements;
Sharper throttle response (particularly off boost)
Engine feels more willing to rev