Cravenspeed 2% Crank Pulley

This pulley is 2% over sized to drive your supercharger faster by altering the ratio between the size of your supercharger pulley and that of the crank pulley. When combined with the uber-popular 15% reduction supercharger pulley a synergistic effect is achieved. The ratio is exaggerated such that much less energy is required to spin more revolutions. The result is increased pressure (psi)(boost) at the disposal of the supercharger. Made from CNC'd aluminum it weights several pounds less than the OEM crank pulley. Causing the engine to rev quicker, and at the same time the oversize will turn the supercharger slightly faster gaining you boost and power.