10 Best Underdrive Pulleys Mustang Gt of September 2025

List of Top Rated Underdrive Pulleys Mustang Gt from thousands of customer reviews & feedback.

Updated On Sep 2025

1,720 Reviews Studied

By Customer Ratings

1
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SR Performance Underdrive Pulleys Kit in Polished Durable Aluminum for Mustang GT 1996-2001 Through Mid-2001 Read Review

  • Free Up 10-15 Horsepower
  • Complete 3 Piece Kit
  • Durable, Lightweight Aluminum
  • Brilliant Polished Finish
  • Premium Quality Construction

2
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BBK 1559 Underdrive Pulley Kit for Ford Mustang 4.6/ GT - 3 Piece Lightweight CNC Machined Aluminum Kit Read Review

  • BBK is your Number One Aftermarket Performance Brand in the USA - American Designed and Built
  • Installing a Set of BBK Performance Underdrive Pulleys is one of the Easiest Ways to Gain Approximately 10-15 Horsepower
  • Direct Replacement Pulley Kit For 01-04 (From April 01) GT only Re Uses Existing Serpentine Belt and Will Not Affect Cooling or Charging of the Vehicle
  • Premium Quality CNC Machined Lightweight Billet Aluminum Pulley Kit Add Great Looks and Performance
  • 3 Pc Kit Includes Crank (Piggy Backs with Factory Pulley), Water Pump and Alternator Pulleys and all Hardware and Instructions for Simple Installation

3
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BBK 1555 Underdrive Pulley Kit for Ford Mustang 4.6/ GT/Cobra - 3 Piece Lightweight CNC Machined Aluminum Kit Read Review

  • BBK is your Number One Aftermarket Performance Brand in the USA - American Designed and Built
  • Installing a Set of BBK Performance Underdrive Pulleys is one of the Easiest Ways to Gain Approximately 10-15 Horsepower
  • Direct Replacement Pulley Kit For 96-01 (Thru March 01) GT and Cobra Re Uses Existing Serpentine Belt and Will Not Affect Cooling or Charging of the Vehicle
  • Premium Quality CNC Machined Lightweight Billet Aluminum Pulley Kit Add Great Looks and Performance
  • 3 Pc Kit Includes Crank (Piggy Backs with Factory Pulley), Water Pump and Alternator Pulleys and all Hardware and Instructions for Simple Installation

4
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SR Performance Underdrive Pulleys; Black Read Review

  • Free Up 10-15 Horsepower
  • Complete 3 Piece Kit
  • Durable, Lightweight Aluminum
  • Black Powder Coated Finish
  • Premium Quality Construction

6
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SR Performance Underdrive Pulleys Kit Polished Durable Aluminum for Mustang GT Late-2001-2004 Read Review

  • Gain Horsepower
  • Complete Kit
  • Durable, Lightweight Aluminum
  • Brilliant Polished Finish
  • Premium Quality

8
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BBK 1554 Underdrive Pulley Kit for Ford Mustang 5.0L - 3 Piece Lightweight CNC Machined Aluminum Kit Read Review

  • BBK is your Number One Aftermarket Performance Brand in the USA - American Designed and Built
  • Installing a Set of BBK Performance Underdrive Pulleys is one of the Easiest Ways to Gain Approximately 10-15 Horsepower
  • Direct Replacement Pulley Kit Re Uses Existing Serpentine Belt and Will Not Affect Cooling or Charging of the Vehicle
  • Premium Quality CNC Machined Lightweight Billet Aluminum Pulley Kit Add Great Looks and Performance
  • 3 Pc Kit Includes Crank, Water Pump and Alternator Pulleys and all Hardware and Instructions for Simple Installation

9
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OBX Racing Sports Red Underdrive Pulley Kit For 05-10 Mustang V8 GT 4.6L 3V Read Review

  • Super Lightweight T-6061 T-6 Aircraft Grade Billet Aluminum
  • Computer CNC Machined For Precision Balance
  • Increased Horsepower And Torque Across Entire RPM Range
  • Dyno-tested And Proven On Race Track
  • High Quality Polished & Anodized Finishes

10
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BBK 1553 Underdrive Pulley Kit for Ford Mustang 5.0L - 3 Piece Lightweight CNC Machined Aluminum Kit Read Review

  • BBK is your Number One Aftermarket Performance Brand in the USA - American Designed and Built
  • Installing a Set of BBK Performance Underdrive Pulleys is one of the Easiest Ways to Gain Approximately 10-15 Horsepower
  • Direct Replacement Pulley Kit Re Uses Existing Serpentine Belt and Will Not Affect Cooling or Charging of the Vehicle
  • Premium Quality CNC Machined Lightweight Billet Aluminum Pulley Kit Add Great Looks and Performance
  • 3 Pc Kit Includes Crank, Water Pump and Alternator Pulleys and all Hardware and Instructions for Simple Installation