Whilst waiting for my two Brothers Slip on I decided to remove the end caps on the original muffler. I see they have welded the muffler to the pipe from the collectorbox. I decided to cut this off allowing just the pipe from the collector box. I then tried various mufflers like Akrapovic, Micron, Remus etc. All proved to be relatively quiet and looked good. With the absence of springs to hold the muffler on a clamp was required and i had to custom various brackets to hang the mufflers.