Yoshimura R77 Works Street Slip-On Exhaust BMW R1200Gs / R1250Gs / Adventure All Street Series systems are Slip-on / Bolt-on applications that do not require tampering with the vehicle's emissions control system, yet still deliver that special spirit the world has come to expect from the legendary company known as Yoshimura. The Street Series exhaust offer street-legal options for almost everything on two wheels. Features Superbike technology and styling Trapezoidal-shaped sleeve Large volume of packing material Straight baffle for ample flow Innovative end-cap Removable Low-Volume Insert Stainless steel tail-pipe