Cobra Drag slip-ons are about as simple as an installation can get. With a great sound and traditional look, they offer clean styling matched with optimal performance. Nothing is simpler than a drag pipe. What's not to understand? The straightest possible pipe, the fewest possible bends, the least possible backpressure. Pure drag pipes work great on dragsters because they spend 100 percent of their time at full throttle. In the real world, you need a little added finesse--the Cobra touch. Cobra drag pipes have the pure, simple lines riders want, but they come with Cobra's removable power cores. With the cores in you get a great, sharp bark of an exhaust note that's still appropriate for riding in town. And you'll also get a real performance increase you can feel.