FMF – Powercore 4 Muffler (some models have a spark arrestor)

• We developed the PowerCore4 to increase the horsepower and torque throughout the entire power curve and give you a noticeable power increase that is very usable and beneficial, no matter what your riding style or ability is.
• Space Age internal packing for maximum packing life.
• Hi-Flo modular end cap.
• Internal shape of core uses Hi-Flo technology.
• Enhanced sonic evacuation provides for higher flow and increased power.