Performance 2-in-1 quad exhaust for Yamaha YFM660R Raptor models, with E-certification from by Spanish specialists Turbo Kit. The high-quality silencer looks great and has a perfect 4-stroke sound. The main focus of Turbo Kit however, is on the best possible engine performance. For this reason, it will only be offered as a complete system with self-developed, hydroformed manifold. In contrast to most exhausts, the Noise Killer Turbo is attached with a circlip and not with a screw. Screws vibrate loose and can be lost. Comes with all the necessary hardware included.