Got my Stubby Cat yesterday. Was really surprised to see the design of the nose of the pipes and the lack of need for circlips. I see zero chances on exhaust leaks with this design. Once my Legend air ride comes and I get it installed I will include details of fitment and some pics. This is not a cheap exhaust by any means. Here is pics of the nose. Are all D&D pipes like this?

 

Yes, all their pipes at the head have this design. That's part of the quality of their build.