FTP Introduces a solution to creating more boost without replacement of the Crank Pulley! The CNC Billet Machined Aluminum Design offers a smaller diameter than stock causing an increase in boost (2-2.5 PSI) which leads to MORE POWER! It also comes with a high speed ZZ Rated S/C bearing, and Re designed OEM Style S/C Clutch. So weather your Factory S/C Pulley Bearing has BLOWN APART like most do, You Have an annoying chirp coming from the Engine compartment, or you are just looking for a performance increase, This is the Part for you!