Yoshimura Sound Insert Kit Flared For Alpha And Alpha T Mufflers (Ins-27-K)Yoshimura Sound Insert Kit Flared For Alpha And Alpha T Mufflers (Ins 27 K) Replacement Flared Low Volume Insert Kit for ALPHA and ALPHA T Mufflers Available as optional kit on applications requiring different sound restrictions Decibel reduction depends on application Kit Includes: Low Volume Insert Tube End cap collar Set screw This product was designed to fit on a standard equipped motorcycle, as delivered from the factory. OE and aftermarket