Cobra RPT Slip-On Mufflers For Harley Freewheeler Just about any standard pair of Slip-On mufflers can easily be bolted to your Tri Glide model, however expect the muffler to stick out like a sore thumb, get dragged when unloading, or damaging the muffler going uphill. Cobra's R&D team has your Tri Glide covered with their RPT mufflers fitted specifically it. The mufflers consist of a 2-1/4 perforated baffle that has been wrapped in fiberglass to allow for a deep bass tone. Features: Chrome finish 3-1/2 bodies bell to 4 at the rear Black powder-coated Race Pro tips Perforated constant 2-1/2 velocity cores wrapped in woven fiberglass helps to provide that deep sound and improved performance Cobra's black RPT tip uses seven 12-point zinc plated bolts to secure tips includes Cobra limited lifetime warranty