4'' Twin Slash Round Slip-Ons 17-20 Touring. CHROME. A classic with an edge, the Twin Slash Rounds feature large 4-inch muffler bodies with the V&H signature Twin Slash end treatment. Utilizing a maintenance-free baffle and minimized heat discoloration, the Twin Slash Rounds give you the perfect blend of past and present for years to come. The optional quiet insert for baffle which reduces sound levels 3-5 dB. Note: Compatible with CVO drop skirt bags. Note: See 981033 for optional quiet baffle.