B&B's Aluminum Pulleys are intended for applications where engine
speeds exceed those of the average passenger car. By reducing the
parasitic drag brought on by turning belt driven accessories faster
than designed,power is increased by driving accessories such as
water pumps and alternators at correct RPM ranges. Reduction pulleys
also prevent premature failure of accessories caused by increased
RPM in race engines.
pulleys are precision cast, then machined to exacting tolerances.
These deep groove pulleys are constructed to properly align with
existing pulleys and contain belts at racing engine speeds.