Akrapovic Slip-On Line Muffler - Titanium - BMW F900R & F900XR263856543 Product Description Product Instructions Constructed with a lightweight titanium muffler outer sleeve, stainless steel link pipe, and pre muffler, and finished with a handmade carbon fiber endcap, the exhaust offers an enormous 21. 6% weight savings over the standard stock version Through innovative design it fully integrates into the lines of the bike with a small and compact build for a powerful visual effect. Its full and vivid sound is a