Factory 4.1 RCT SL Exhaust Silencer 12-16 KTM 350 EXC-F 500 EXC - FMF 045472

Combining FMF Resonance Chamber Technology with robust construction, the FMF Racing Factory 4.1 RCT SL Slip-On offers refined performance and durability. This slip-on exhaust utilizes aerospace-grade materials, a lightweight aluminum body, and a stainless steel rear end cap, all engineered and manufactured in Southern California. Its compact design reduces crash susceptibility, centralizes mass, and increases RPM-range power, making it ideal for enthusiasts demanding reliability and results on closed courses. Features include internal and external Resonance Chamber Technology for optimized power, a shortened length for reduced vulnerability and mass centralization, and construction from aerospace-grade aluminum with a stainless steel rear end cap. It provides significant increases in power across the full RPM range and noticeable weight savings over stock components. Includes RTS Rapid Tuning System for quick adjustments and can be paired with FMF or OEM headers. Supplied with a screen-type spark arrestor and a 94 dB quiet insert. Item ID: 045472. Type: Slip-On. Configuration: Single. Construction: Aluminum. Finish: Natural. Midpipe: Stainless Steel. Endcap: Carbon. Spark Arrestor: Screen insert (included). Quiet Insert: 94dB insert (included). Weight: 4.8 lbs. Application Notice: Closed Course Use Only.