If you want to be noticed... this is your muffler! The Violator flows as much air as the Race-Pro Muffler but has an incredibly unique and aggressive sound! The Violator's aggressive sound is the result of a unique internal louvered tube with mini sound deflector chambers utilizing Pypes Slingshot technology. This configuration also dramatically reduces unwanted internal cabin resonance too! Mufflers are made from stainless steel to ensure longevity.