BBK Aluminum Underdrive Pulleys for 1979-1993 5.0L Mustangs.Made from aircraft quality machined aluminum alloy these BBK under drive front accessory pulley kits are one of the easiest ways to free up an average 8-15 horsepower in under 30 minutes.
These BBK pulley kits are designed as direct bolt on replacements for the current factory pulleys and retain full cooling and charging characteristics.
Each BBK under drive pulley kit is vehicle specific. They are designed and tested at the BBK headuarters in Southern California for maximum performance.
Each kit comes with complete installation instructions and allow the use of existing serpentine belts.
The aluminum pulleys are significantly lighter than the steel versions freeing up a few mre horsepower.
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