An underdrive pulley system for your Ford Mustang will increase engine
horsepower and IMPROVE GAS MILEAGE by reducing the amount of power
required to drive external engine accessories on your Ford Mustang. The
alternator, power steering, water pump and air conditioner all rob
horsepower from the engine. When you replace the factory-sized crank
and accessory drive pulley on your Ford Mustang with a resized
underdrive pulley, the accessories are slowed, resulting in more
horsepower available to drive the rear wheels. Typically, an underdrive
pulley will increase output for your Ford Mustang by 12-15 horsepower,
resulting in quarter mile improvements of .2 to .25 seconds. In
addition, mileage improvements of 2 to 3 mpg are typical.

LFP Underdrive pulleys will increase horsepower up to 16 RWHP, and increase mileage by 1 to 2 MPG. LFP Pulleys
are manufactured from billet steel, exceeding factory quality and are the only Pulley system available on the market
today that are SFI approved for all racing applications.
Installation: The kit includes all required components and hardware for a complete installation.
Tech Notes: Use of Harmonic Balancer Puller tool required for factory Harmonic Balancer removal.