This offers the option to upgrade the Slip-On Line muffler to a full, complete system. It is made from perfectly welded lightweight titanium tubes. It delivers improved sound when used in conjunction with the Slip-On Line, delivering a powerful racing sound that complements the bike’s performance and racing pedigree. Power and torque are improved, especially from the mid-range upwards.Optional headers fit also with Akrapovi? standard (first fit) silencer.For perfect performance, throttle response and durability, ECU remapping is mandatory.THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.