High Performance Pulleys

From the factory your vehicle is equipped with multiple pulleys. Pulleys are responsible for guiding and tensioning belts throughout the engine. The belts are connected to various engine accessories such as your water pump, your AC compressor, alternator, and power steering pump. High Performance Engine Pulleys are made from a lightweight material. Most pulleys are a direct replacement for your OE pulleys. Performance pulleys also add a nice clean polished look to your engine bay, no matter the finish you decide to go with. Sport Compact Warehouse is your premier source for performance engine pulleys. Reach out to one of our experienced representatives if you have any questions and we will help you make a more informative decision.

In the accessory drive system, the crankshaft drives the water pump, alternator, power steering pump, A/C compressor and other accessories via an arrangement of pulleys mounted to each component and one or more drive belts. While the amount varies according to vehicle, all accessories use up horsepower – power that could be applied to your drive wheels. But there are ways to reduce your accessories’ power consumption without negatively affecting function.

You can gain horsepower by reducing the weight of your pulleys and by changing their diameter. We offer aluminum pulleys that are much lighter than the original equipment pulleys, without any reduction in strength. These pulleys are direct replacements and require no modifications for installation. Their light weight not only results in a horsepower increase, but the reduced rotational mass also improves throttle response.

Reducing the diameter of the crankshaft drive pulley or increasing the diameter of the driven accessory pulley underdrives the accessory, slowing its rotational speed and reducing the amount of horsepower it draws. However, the size of the pulleys must be carefully calculated so your accessories continue to operate properly. Everyone wants more horsepower, but not with adverse side effects like reduced power steering assist, an alternator that doesn’t charge the battery, or an overheated engine. Our pulley kits have been extensively tested to deliver maximum horsepower with no loss of accessory functionality.

Using underdrive pulleys to reduce accessory drag is an easy and inexpensive way to gain as much as 15 horsepower! Each kit is engineered for the specific application, ensuring straightforward installation. Most kits are designed to use the existing serpentine belt, but a belt is supplied if a different length is required. Most lightweight and underdrive pulleys are machined from high grade aluminum alloy, some with an attractive chrome or anodized finish, so if not for the horsepower increase, you’ll want them just for an engine appearance upgrade.

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HOLLEY 20-180BK
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Holley 20-180BK Mid Mount Premium Accessory System (Black)

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HOLLEY 20-291BK
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HOLLEY 20-291BK

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HOLLEY 20-291
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HOLLEY 20-291

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HOLLEY 20-185BK
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Holley 20-185BK Mid Mount Premium Accessory System (Black)

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HOLLEY 20-185
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Holley Performance 20-185 Mid-Mount LS Accessory Drive System Kit

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HOLLEY 20-186BK
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HOLLEY 20-186BK

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HOLLEY 20-240BK
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HOLLEY 20-240BK

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HOLLEY 20-242BK
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HOLLEY 20-242BK

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HOLLEY 20-137
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HOLLEY 20-137 LS Complete Accessory Drive Kit Includes SD508 A/C Compressor, Alternator, P/S Pump, Tensioner, Belt, & Pulleys

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HOLLEY 20-162
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HOLLEY 20-162

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HOLLEY 20-143
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HOLLEY 20-143 LS Alternator & P/S Pump Accessory Drive Kit Driver's Side Bracket Includes Alternator, P/S Pump & Pulleys

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HOLLEY 20-156
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HOLLEY 20-156 Accessory Drive Bracket Driver's Side P/S & Alt Bracket For Applications w/o A/C For GM LS

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HOLLEY 20-160
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HOLLEY 20-160 Low Drive A/C System Passenger's Side Incl Sanden SD7 Compressor For GM LS

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GREDDY 13512111
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GREDDY 13512111 Pulley Kit 6 Piece Full Kit

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aFe 79-10003
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aFe 79-10003 Crankshaft Power Pulley 4.124in Dia. Inc. Pulley/Bolts/Belts Billet Aluminum And Black Anodized 5 HP/6 Lbs. x Ft

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aFe 79-10001
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aFe 79-10001 Crankshaft Power Pulley 4.124in Dia. Incl. Pulley/Bolts/Belts Billet Aluminum And Black Anodized 10 HP/7 Lbs. x

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aFe 79-10002
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aFe 79-10002 Crankshaft Power Pulley 4.124in Dia. Incl. Pulley/Bolts/Belts Billet Aluminum And Black Anodized 10 HP/7 Lbs. x

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HOLLEY 20-132
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HOLLEY 20-132 LS Accessory Drive Bracket Passenger & Driver Side Brackets (Alt, P/S & A/C) Fits Sanden SD508 or SD7 Comp

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HOLLEY 20-131
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HOLLEY 20-131 LS Accessory Drive Brackets Includes A/C, P/S & Alt Brackets Works w/ R4 Compressor

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MOROSO 60008
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MOROSO 60008 Crank Trigger Kit Fits OEM, Fluidampr, ATI, Summit, Fischer, JEGS and other BBC 8.0" Diameter Dampers Fits All B

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Go Fast Bits 2002
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Go Fast Bits 2002 Engine Under Drive Pulley Kit

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Go Fast Bits 2003
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Go Fast Bits 2003 Underdrive Pulley Kit

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Go Fast Bits 2010
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Go Fast Bits 2010 Engine Under Drive Pulley Kit

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Go Fast Bits 2014
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Go Fast Bits 2014 Engine Under Drive Pulley Kit

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Go Fast Bits 2016
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Go Fast Bits 2016 Engine Under Drive Pulley Kit

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