Our 4AGZE crank pulley is 175mm in diameter for high boost on the GZE. On a bone stock 4AGZE this should raise the boost to around 14PSI. If your engine has a much larger intercooler, you will not see quite so high boost pressure, but you will see much more power!

Please be advised, you will need to run a longer supercharger belt, move the factory timing pointer outward, and run a smaller idler pulley. (A 4AGE NA timing belt alternator pulley works decently when flipped around backwards and shimmed out a tad).

The keyway boss is 200% larger and reinforced to help prevent the keyway breakout that is so common on high revving 4AGE's. 

We are currently changing all of our pulleys to a gorgeous grey anodize but can anodize up to 10 pulleys in a custom color for an additional fee




  • Balanced for use at high RPM's
  • Faster engine revving!
  • Reinforced crank boss to prevent failure!