4 into 1 Base Collectors OD:1.63" Note that some kits may

Note that some kits may allow for multiple packings of a muffler

Burns Stainless Merge Collectors (Header Collectors) are custom engineered for each application using our proprietary X-Design parametric custom exhaust design computer program

Our products feature the highest quality fabrication and TIG-welding

O2 Sensor Ring

4 into 1 Base Collectors OD:1.63" Note that some kits mayTo Specify Outlet Size: Find the outlet range as shown in the picture on the left for the specific sku. Then write a measurement on or between the range in 1 8" increments. Description Burns Stainless 4 1 Merge Collectors (Header Collectors) are custom engineered for each application using our proprietary X Design parametric custom exhaust design computer program. Merge Collectors combine high flow and high velocity to increase and broaden an engine's