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User 1
User 4
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Install a set of BBK performance underdrive pulleys and see an average of 8-15 additional horsepower over the stock pulleys. Under drive pulleys increase engine output by reducing the draw of the engines accessories by slowing them down and reducing the HP they use. Additional and significant performance improvements can be seen by reducing the weight of the pulley versus the original pulley which is why we recommend the BBK CNC Machined billet aluminum pulley kits for maximum horsepower gains. ALL BBK pulley kits are designed as direct bolt on replacements for the current factory pulleys and retain full cooling and charging characteristics. BBK under drive pulley kits are vehicle specific and each kit comes with complete installation instructions and allow the re-use of existing serpentine belts.

This Part Fits:

Year Make Model Submodel
2001-2004 Ford Mustang GT
2001 Ford Mustang GT Bullitt
2003-2004 Ford Mustang Mach 1
2001,2003-2004 Ford Mustang SVT Cobra
2003 Ford Mustang SVT Cobra 10th Anniversary

BBK

BBK 02-04 Mustang 4.6 GT Underdrive Pulley Kit - Lightweight CNC Billet Aluminum (3pc)

SKU BBK1559
$319.99
$298.99
Install a set of BBK performance underdrive pulleys and see an average of 8-15 additional horsepower over the stock pulleys. Under drive pulleys increase engine output by reducing the draw of the engines accessories by slowing them down and reducing the HP they use. Additional and significant performance improvements can be seen by reducing the weight of the pulley versus the original pulley which is why we recommend the BBK CNC Machined billet aluminum pulley kits for maximum horsepower gains. ALL BBK pulley kits are designed as direct bolt on replacements for the current factory pulleys and retain full cooling and charging characteristics. BBK under drive pulley kits are vehicle specific and each kit comes with complete installation instructions and allow the re-use of existing serpentine belts.

This Part Fits:

Year Make Model Submodel
2001-2004 Ford Mustang GT
2001 Ford Mustang GT Bullitt
2003-2004 Ford Mustang Mach 1
2001,2003-2004 Ford Mustang SVT Cobra
2003 Ford Mustang SVT Cobra 10th Anniversary
$319.99
$298.99
Photo - Primary Photo - Primary Photo - Unmounted User 1 User 4 User 3 User 2 User 3 Photo - Unmounted User 3 Photo - Unmounted
Photo - Primary Photo - Primary Photo - Unmounted User 1 User 4 User 3 User 2 User 3 Photo - Unmounted User 3 Photo - Unmounted

Frequently Bought Together

Total price$1,288.99

Product Description

Install a set of BBK performance underdrive pulleys and see an average of 8-15 additional horsepower over the stock pulleys. Under drive pulleys increase engine output by reducing the draw of the engines accessories by slowing them down and reducing the HP they use. Additional and significant performance improvements can be seen by reducing the weight of the pulley versus the original pulley which is why we recommend the BBK CNC Machined billet aluminum pulley kits for maximum horsepower gains. ALL BBK pulley kits are designed as direct bolt on replacements for the current factory pulleys and retain full cooling and charging characteristics. BBK under drive pulley kits are vehicle specific and each kit comes with complete installation instructions and allow the re-use of existing serpentine belts.

This Part Fits:

Year Make Model Submodel
2001-2004 Ford Mustang GT
2001 Ford Mustang GT Bullitt
2003-2004 Ford Mustang Mach 1
2001,2003-2004 Ford Mustang SVT Cobra
2003 Ford Mustang SVT Cobra 10th Anniversary

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