Delkevic mufflers are handcrafted from the highest quality materials to enhance your motorcycle in both performance and looks. This set includes - Delkevic slip-on muffler with a removable baffle, link pipe, strap, and clamps. Delkevic SS70 9 inch oval stainless steel mufflers are made from high grade 304 stainless steel with the same care and attention to detail we apply to all Delkevic silencers. They have a big 2 3/4 inch (70mm) outlet and 2 inch (50.8mm) inlet. They are short, open, crisp, and LOUD with the baffle removed but with neighborhood friendly db. The weight of the muffler is 3.22 lb / 1.460 kg. No rejetting or remapping is required after fitment however we always recommend a dyno test after fitting replacement exhaust parts to your motorcycle.