The original and still best bang for the buck – the Powercore 4 S/A. This is a race design muffler at a value price. If features our exclusive Hi-Flo technology to evacuate exhaust bette rand provide maximum core surface area for sound absorption. The Hi-Flo technology is evident in the stainless steel formed endcaps as well. For maximum tunability, the Powercore 4 has a highly versatile modular rear endcap for optional performance accessories a 2 or 1-3/4 endcap for smoother power delivery a quiet core insert for the sound conscientious and a replacement spark arrestor screen. Performance, versatility and pounds lighter than stock all at an affordable price, FMF’s powercore 4 Feel the power!
