BBK SFI-Approved Pulley Kits

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For enthusiasts looking for the proven horsepower of under drive engine pulleys with a SFI-approved crank/damper - these kits are the ticket. Built from high quality CNC-machined aluminum & steel - each kit is designed as a direct bolt-on in place of the stock kit and will work on basic street or more radical strip applications. 9-12 rear wheel horsepower gains! Made in the U.S.A.