The two Slip-On Line (Titanium) muffler outer sleeves are crafted in high-grade lightweight titanium, offering a decrease in weight over the stock item, leading to improved handling. One version of the Slip-On Line (Titanium) is designed for markets requiring EC/ECE type approval and Euro 4 regulations, and the other is designed for other areas where these regulations are not needed, or for track use. Finished with a hand-crafted carbon-fibre end cap, the design of these systems improves the look of the Z900 with a sportier muffler that gives a more aggressive and tailored look to the machine. The Slip-On Line is also available in carbon fiber to give the consumer a choice of finish for which race-inspired materials they would like to add to their machine. Meeting EC/ECE and Euro 4 regulations, this exhaust, like the titanium version, is a simple plug-and-play operation with no remapping required.