Yamaha R6 (2003-05) V.A.L.E. Standard Mount & Yamaha R6S (2006-09) V.A.L.E. Standard Mount Slip-on Exhaust Systems: Yamaha’s R6 has caused quite a stir since its introduction. If you thought people were impressed with the bike before wait until they see it with a Two Brothers Racing exhaust system installed on it.Our small oval M-2 V.A.L.E. exhaust system features: our exclusive Teflon coated, blunted, cast magnesium outlet that not only looks great but also allows for various silencer inserts.The V.A.L.E. inlet design eliminates the use of springs and creates an adjustable mount that is solid when fixed in place. The system also features a thinwall s-bend tube that connects to the factory header pipes.Choose from Aluminum, Carbon and Ti versions from the pull down menu.