Any truck built for performance and work takes a lot of energy to simply get going. Therefore, given the momentum and inertia of such trucks, it takes a lot of energy to stop one, too. Banks Engine Brakes are a good way to help out your disc brakes in bringing your truck to a stop, because dumping all of that workload on your disc brakes puts an awful strain on them. Basically, an engine brake works by more or less sabotaging the compression stroke in your engine, causing the power generated to dissipate quickly. With less power getting to your wheels, your truck will begin to slow. From there, the disc brakes can begin to take over. Banks Engine Brakes are especially useful when driving down a steep grade. The momentum of your truck coupled with the downward pull on it makes it a hard object to stop. With an engine brake to lend a hand to your disc brakes, all the work required to stop your truck is spread among out various parts. This will certainly prolong the life of your disc brakes. And as an additional perk, Banks Engine Brakes can also improve fuel economy and horsepower during that power-dissipation phase of braking. All customers want first-rate service when ordering reliable auto parts from us. To support that need, we've established a 24-hour, 7 day a week support hotline to address your needs. To make a good deal even better, there is 100% free shipping on every order over $50. If you spot a better price somewhere else, tell us - we will beat any legitimate auto part price.