I brought a complete Niche exhaust system for my 1200 wing. They make more noise than the standard system. It now sounds like a standard Rocket 3. The font pipes coloured very quickly. Can't tell you how long they will last as they have only done 2000 miles. EricTheres a Niche Cycle Supply out of Florida that has replacement exhaust mufflers for the gl1500.There called MAC exhaust mufflers.
Has anyone used these pipes and if so how do you like them?
They advertise on E-bay.