Experience enhanced performance with the FMF 042383 Fact 4.1 Mini S/O Stainless Steel Muffler, designed for those who demand the best from their machines. This innovative muffler incorporates the latest Resonance Chamber Technology, ensuring a refined exhaust experience while maintaining maximum power output. Its patented core shape effectively lowers sound levels without sacrificing performance, making it an ideal choice for enthusiasts who value both power and compliance. The FMF Fact 4.1 features a uniquely designed canister shape that increases internal volume, allowing for more sound-absorbing material. This design not only enhances sound quality but also optimizes exhaust pressure through its advanced chamber design. Additionally, the factory-forward engineering centralizes mass, reducing the likelihood of crash damage. With a titanium Megabomb included, you are assured of optimized power output tailored to your specific application. Upgrade your ride with this high-performance muffler today! Features: * Incorporates the latest in Resonance Chamber Technology * Patented core shape lowers sound level while maintaining maximum power output * Patented canister shape increases internal volume for more sound-absorbing material * Patented chamber design enhances and refines exhaust pressure * Factory Forward Engineering centralizes mass and reduces crash damage * Tuned exhaust with optimized core specifications for each application * Innovative rear endcap for simple installation of tuning tip inserts or spark arrestor * Titanium Megabomb included to optimize each machine's power output