The Spec II exhaust is specially designed system for competition use only. Its simple straight thru design creates an increase of exhaust gas velocity in order to improve efficiency. This exhaust uses a middle silencer (resonator) on the main pipe to help maintain torque in the low to mid speed range.
All mufflers are made with SUS304 stainless steel, 1mm is used for main pipe. and the ultra 0.8mm is used for main silencer combine with 76.2mm (3") exhaust piping. This combination creates a super light weight muffler and turbo setup to maintain broad power band. Inner silencer are included with the kit.