CTS Turbo Audi S4 B8 / Audi S5 8T 3.0 TFSI Crank Pulley Kit

The CTS Turbo crank pulley, made from precision billet T6061 aluminum, is larger diameter than the t wo pieces OEM pulley, you can select a 180mm or 187mm diameter according your boost gain target. Not only reducing the rotational mass of the crank, this upgrade will also i ncrease the speed at which the supercharger spins for more boost pressure output. Increased boost pressure in conjunction with upgraded ECU software results in a dramatic increase in horsepower and torque throughout the entire powerband. This will not increase stress or excessive wear on supercharger or engine components.