They are different. The diameter of the exit hole for the exaust gas is smaller (because it only has to handle gas volume from 2 cylinders) and the diameter of the muffler itself is smaller. If you need it, I can measure each and give you reasonably exact differences.
They are different. The diameter of the exit hole for the exaust gas is smaller (because it only has to handle gas volume from 2 cylinders) and the diameter of the muffler itself is smaller. If you need it, I can measure each and give you reasonably exact differences.