DS70 9" Carbon Fiber Oval Muffler Exhaust Slip-on This muffler is not bike specific, ID 50.8mm. You may require a Delkevic link pipe or modification to the bike. We have 200+ bike model fitmens as slip ons and complete systems Delkevic DS70 9" oval carbon fiber mufflers are made from a pre-formed composite carbon fiber sleeve and 304 stainless steel. They have a large 2 3/4" outlet amplifying the sound. They are short, crips and LOUD. This set includes muffler, mounting strap, inlet clamp, and removable baffle. No rejetting or remapping is required after fitment on a stock bike however we always recommend a dyno test. If the motorcycle has other modificaitons to the intake or exhaust system some tuning may be required. Delkevic mufflers are handcrafted from the finest quality materials to enhance your motorcycle in both performance and looks.