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GMC Sierra Underdrive Pulleys

Free Up Horsepower
Underdrive pulleys are a great way to free up power to improve performance.
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Underdrive pulleys are one of the more popular upgrades you can add to your GMC Sierra to reduce engine work strain and put more power back on the ground. Your Sierra engine parts such as the alternator, power steering, water pump, and air compressor, are using horsepower from the engine not the wheels. So, if you replace the original factory sized pulleys with an underdrive pulley, these accessories are slowed, which in turn gives you more horsepower from the wheels. When you decide to free up a little extra horsepower, then look no further than AutoTruckToys, we have underdrive pulleys yhat will give your GMC Sierra that extra punch you are looking for.
Underdrive Pulleys for your GMC Sierra:
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