ARROW 72186PD Aprilia Tuareg 660 Exhaust Collector Pipes (for ARROW slip-on; stainless steel)Exhaust collector pipes for Aprilia Tuareg 660 by ARROW. Constructed with the utmost care, Arrow manifolds allow for significant increases in torque and power. They are made of sturdy and durable AISI 304 stainless steel while in the comeptition versions the manifolds are made of titanium alloy to guarantee lightness. The joint work of the research and development department with the help of the best craftsmen and thanks also to the experience gained