Silence Is Overrated, This One Performs The Gibson CFT Muffler is engineered for performance and longevity. It uses a unique combination of resonance chambers, directional louvered tuning ports, and angular induction to actively tune your exhaust flow. This design draws gases into the muffler and expels them at a higher velocity, boosting overall power. Featuring a chambered, louvered core and a non-packed construction, it ensures consistent sound quality with no degradation over time. The fully welded, solid internal construction adds durability and performance you can rely on.