Description: Rules they e everywhere. When it comes to sound requirements they can be ignored. Don take chances with sound control or you may end up on the trailer. This Vortex cone insert from Dynatech installs easily near the exit of the header collector or muffler outlet to reflect and dissipate sound energy reducing the decibel level. Because the open area of(more)

Description: Rules they e everywhere. When it comes to sound requirements they can be ignored. Don take chances with sound control or you may end up on the trailer. This Vortex cone insert from Dynatech installs easily near the exit of the header collector or muffler outlet to reflect and dissipate sound energy reducing the decibel level. Because the open area of the cone is greater than the area of the collector or exhaust pipe theres no significant backpressure so you reduce noise with little or no power loss. This cone is made from T-304 stainless steel and weighs less than 1/2 lb. each.(minimize)