Round Triple Flow Muffler - Top / Bottom 57mm In / Out

RQ400OOH - Round Triple Flow Muffler Top / Bottom 180mm Case 400mm Long 57mm In / Out With Stubs Top Quality Aluminised Steel with Double Skin Triple Flow Design Designed to replace OE mufflers with similar low decibel noise readings. Common design is the triple flow with 3 tubes being perforated, louvre or plain. # 1 tube is the inlet, # 2 is the bypass and # 3 is the outlet. Oval triple flow mufflers come in offset/centre and offset/offset configuration.Round triple flow mufflers have 120 degree spacings called PB and DB. Some baffled muflers also have a small bullet (bull tube) built into the outlet tubeOE design baffled design tend to have extra plates and chambers with tuning tubes Centre/centre baffled mufflers are more OE design with plates and chambers.