FMF PowerCore 4 HEX Muffler 044397 1821-1572 Yzf 1000 R1 2009/2014 00 dB(A) @ 4750 rpm

00 dB(A) @ 4750 rpm with dB-Killer

Features a unique blend of variable-density foam and GelCore™ technology

The rubber is also weatherproof and won't deteriorate in the sun or elements you encounter on the road

Puncture resistant outer shell (made with reinforced scrim material)

Threaded brass inserts included for inner fairing installation

FMF PowerCore 4 HEX Muffler 044397 1821-1572 Yzf 1000 R1 2009/2014 00 dB(A) @ 4750 rpmOverall increase in power and torque Durable stainless steel and aluminum construction Space Age internal packing material for maximum longevity Internal shape of core uses Hi Flo technology Enhanced sonic evacuation provides for higher flow and increased power Includes removable spark arrestor