The FMF Powercore 4 Hex Muffler 044423 is engineered for those who demand high performance and durability without compromising on value. Designed with race-inspired technology, this muffler enhances your vehicle*s torque and horsepower while ensuring long-lasting reliability. With its robust construction and advanced features, the Powercore 4 Hex is the perfect upgrade for enthusiasts seeking a significant boost in performance. Features: * Power and Torque Improvement: Overall increase in power and torque for enhanced performance. * Durable Materials: Constructed from durable stainless steel and aluminum for longevity. * Advanced Packing Material: Utilizes Space Age internal packing material for maximum durability. * Hi-Flo Technology: Internal core shape designed with Hi-Flo technology for improved exhaust flow. * Enhanced Sonic Evacuation: Provides higher flow and increased power through advanced sonic evacuation. * Removable Spark Arrestor: Includes a removable spark arrestor for versatility in use. * Compatible with Headers: Can be used with FMF or Stock OEM Header for easy installation.