Why an X-pipe? An X-pipe can provide better exhaust velocity and superior scavenging ability than a H-pipe or non crossover equipped exhaust. It works especially well with a modified engine with a power band higher in the rev range (like if you've installed a larger aftermarket cam). The result can be even more upper end horsepower than an H-pipe might deliver. This kit includes 3 inch diameter mandrel bent aluminized steel tubing, X crossover, 3 inch collectors, four exhaust flanges, and eight u-bolts. Mandrel bent tubing decreases backpressure over stock type compression bends for better performance. The overall dimensions are 24 inches wide x 56 inches long. The pipes slip fit into the crossover and the supplied clamps make it easy to secure, or you can have it welded together. The pipes are designed to be cut-to-fit to your application.