When you install numerous performance enhancing accessories, the desire results simply do not come. Instead of boosting your power, they suck it out of your engine. The answer is Roush performance pulleys. These v-belt horsepower pulleys can increase your horsepower by reducing the accessory drive belt speed. Ultimately these lightweight pulleys reduce the rotating weight and provide your vehicle with maximum efficiency since they are slightly oversized. They give you a 25 percent reduction underdrive setup. There are three different pulleys included in this one kit. These three pulleys include the crankshaft pulley, the water pump pulley, and the alternator pulley. They are all made of steel construction which is extremely durable. The benefit of these pulleys does not stop at improved horsepower. Engine cooling potential also increases because the water pump pulley speeds up the water flow through the engine as well as increases the fan speed. Give yourself back some of the horsepower that your accessories are wasting. You are sure to be satisfied with the powerful results that you will get from your Roush performance pulleys. Feel the power under the hood that they can help you to regain. Do keep in mind that these pulleys are not legal for use in street vehicles. Auto hobbyists certainly deserve tremendous sales assistance when they buy quality parts for their car or truck. That's why we've established a 24/7 customer service call bureau to support you with your questions. Nobody likes to pay for shipping, so we always provide FREE shipping on every order greater than $50. If you can find a better price, call us - we always beat any price advertised elsewhere.