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Try Auto Specialties underdrive street pulley sets to increase your engine's horsepower. These Auto Specialties replacement crank, alternator, and water pump pulleys turn slower than stock and provide up to 15 extra horses, for about 30 minutes of work. You'll also get better mileage and increased accessory life in the bargain. Instructions are included.
( 30 )
$266.99
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$369.99
Auto Specialties harmonic balancers are integrated with an underdriven crankshaft pulley to slow down your accessories and increase power. CNC-machined for precision and durability, these Auto Specialties harmonic balancers feature a durable nitride finish to resist corrosion.
( 1 )
$341.99
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$354.99
Auto Specialties underdrive crankshaft pulleys increase engine horsepower by reducing the amount of power required to drive external accessories. All pulleys are CNC-machined from billet steel or aluminum, exceeding factory quality.
( 47 )
$259.99
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$449.99
The Eaton blower pulleys from Auto Specialties can increase horsepower--just install them, and go! They're designed to work with your Eaton blower, and will give you better fuel mileage and increased accessory life.
( 3 )
$309.99
Auto Specialties overdrive crankshaft pulleys are designed for use with superchargers. Auto Specialties overdrive crankshaft pulleys help to increase boost by using a larger crank pulley to turn the compressor faster. Auto Specialties overdrive crankshaft pulleys can help you to increase your boost by as much as an estimated 8 psi.
( 1 )
$282.99
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