I had a Supertrapp on my Transalp. It was a nice pipe. All stainless steel, the threaded nut thingies that the screws for the disks screwed into were sturdy and didn't strip. No rusting mid pipe, and it was all stainless. Mine was well packed and over about 10k mi it never needed repacking. That was a design from about 1988. The IDS2 I had was the straight thru "racing" model. I got it used, needed to put an endcap and disk (spacers) on it--and repacked it at the same time. What makes it shitty: The body of the muffler is aluminum--prone to denting, getting misshaped, and is difficult to repack. Also never looks good. The fasteners that hold the endcap and disks on tend to strip as do the fasteners that hold the front of the muffler to the actual muffler tube. The mid pipe is mid steel that comes painted with black (barbeque) paint. Under the paint, the pipe rusts--so that it looks like shit. Kinda like Gen 1 KLR header pipe. The pipe is loud. If you use few enough disks to keep it quiet, it's restrictive. If you open it up to try to get some gas flow, it's a loud sumbitch. Sorry, Supertrapp, but this is an old, tired design that never was any good. If you get one of the competition, my XCR for example, you get a quality system approach to an exhaust can. It's USFS certified. The fasteners don't strip, the body of the muffler looks well built and polished. And it comes with a stainless mid-pipe that starts out shiny-chromie and heats in to a golden color that perfectly matches the golden brown of the stock Gen2 exhaust header. Mine has about 7000 miles on it and still doesn't appear to need a repack. And it's quiet enough that my neighbors (mostly blue hairs) haven't complained. I've said that one of the pipes I'm really impressed with is the Leo Vince. Well built, quiet, & legal in the forests. Nice competitive price, and it's got stainless steel packing. If I were buying another pipe, it would be Leo Vince. If all you can afford is Supertrapp, save a little longer and get something else.