Optional collector to further optimize the performance of the Slip-On Line exhausts When this beautifully crafted header is added to any Slip-On Line exhaust for the Z900, it turns the muffler into a complete racing system increasing power to even higher levels of enjoyment. The addition of the collector also improves the exhaust sound, giving it a more pronounced sporty tone. To obtain the best performance, acceleration response and durability, it is recommended to use the specially developed map
