Our GZE 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 bel alternator pulley works decently when flipped around backwards and shimmed out a tad).
They weigh in at nearly 70% lighter than the factory pulleys. The keyway boss is 200% larger and reinforced to help prevent the keyway breakout that is so common on high revving 4AG's.
Please select the pulley you need from the list carefully. Let us know if you have any questions!