Vibrant Performance standard flex couplings help your exhaust system withstand the stress of your high performance engine. Best suited for naturally aspirated applications, Vibrant standard flex couplings are engineered to isolate vibrations and designed to reduce the premature cracking of your manifolds and downpipes. Complete T304 stainless steel construction offers long life and the couplings are available with or without inner braid liner, in diameters and lengths to fit your project. The inner braid liner provides laminar flow, protects bellows from premature failure, and helps to eliminate exhaust "whistle." Add vibration control to your exhaust with Vibrant Performance standard flex couplings.