A crankshaft pulley utilizes the engine power to turn several other pulleys using one or several belts. This system of pulleys powers your accessories like air conditioning, power steering, and your alternator.
A factory crankshaft pulley, the faster it will spin, and it will require less energy from the engine. This gives a small horsepower boost.
Next time you work under your hood, check the crankshafts can throw off your car's timing or cause noticeable vibrations.
Underdrive Pulleys
An alternator are vital to the performance of your car, so it's a give and take.
Lightweight Pulleys
Specially designed, Alta pulley for example, weigh under one pound. That is over over six pounds lighter than a stock pulley. Lightweight crank pulleys do not reduce the power to your peripherals and are equivalent to taking 100 pounds off of your vehicle.
