Every time the exhaust system is mentioned, what comes to your mind? Only one word-pipes! Whether it's the catalytic converter or the muffler, all the exhaust parts are basically pipes. They may serve different functions, but they have one thing in common-they're all passages of the exhaust gases. Once the gases are collected by the manifold, they all pass through the down pipe before they proceed to other exhaust pipes. The down pipe is but a tube, a passage, but its construction determines engine efficiency. Like all other exhaust parts, it should be engineered well to promote fast exhaust flow and reduce backpressure. A mandrel-bent pipe is preferred these days because it promotes an improved engine performance. Plus, the down pipe should be strong enough to withstand the damaging effects brought by the very high temperature of the exhaust passing through it. It should be crafted from durable materials with damage-resistant properties (i.e. aluminized steel). If you need a new down pipe for your ride, whether as a replacement to a damaged pipe or an upgrade to a poorly performing one, Car Stuff is one of your best resources. We have exhaust parts from performance brands, all designed with utmost efficiency in mind. Find them in our catalog anytime.