Husqvarna Technical Accessories FMF Factory 4.1 RCT Silencer. Silencer housing made of high-grade titanium. Carbon silencer cap. Mounting also possible with original header. Significantly more torque. Substantial weight saving. Noticeable performance enhancement. Blue anodized outer sleeve. Note: In connection with an FMF Megabomb header even further increase in rideability and power output can be achieved.