Made from aircraft quality machined steel or aluminum alloy these BBK Mustang under drive front accessory pulley kits are one of the easiest ways to free up an average 8-15 horsepower in under 30 minutes.
These Mustang BBK pulley kits are designed as direct bolt on replacements for the current Ford factory pulleys and retain full cooling and charging characteristics.
Each BBK Mustang under drive pulley kit is vehicle specific. They are designed and tested at the BBK headquarters in Southern California for maximum performance.
These under drive pulley kits are available in a hand polished aluminum finish or gloss black powder coated steel. Each Mustang pulley kit comes with complete installation instructions and allow the use of existing serpentine belts.
Due to the difference in diameter from the stock Mustang pullies, the alternator and charging system may need to be upgraded if you have a large stereo system.
These BBK Mustang underdrive pullies work great on a stock or modified V8 GT or LX Mustang!
Don't expect a noticeable improvement in power, but if you're looking for a little engine dress-up, these are a good set of pulleys to get. The only downside, and it's not really specific to this product, is that I would like to complete the pulley set with aluminum idler, tension, and power steering pulleys. I've bypassed the A/C and smog pump, but it would be great for BBK to provide a complete accessory pulley set.
For those installing the pulleys - you'll definitely need an impact wrench, or take the alternator to a shop to have the alternator pulley removed. I also used the impact to remove the water pump pulley, as a ratchet + belt installed + holding the pulley wasn't quite enough to get the stock water pump pulley off. Crank pulley was a breeze. Overall time to install (with an impact wrench) is easily less than 30 minutes.
Yes, I would recommend this item to a friend!
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William M. on
I have had underdrive pullies on my 06 GT and they didn't quite fit right. Had to have a machine shop modify a few things. These on the other hand fit perfect! And if you're good with a wrench you can have this done in under one hour. Although I do recommend a slightly shorter than stock belt, just for tension reasons.
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Since 1988 - BBK has dedicated itself to designing and building cutting-edge high-performance parts and accessories for today's EFI-equipped Mustangs and Ford Lightnings while maintaining the OEM quality levels.
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