You are looking at the latest in XM and Sirius Antenna technology! This new XM and Sirius antenna is specifically designed to deliver the highest quality signal with the smallest design for your motorcycle. This antenna is cone-shaped and designed specifically to combat the common problem bikers experience of loosing XM signal due to the decreased height of a motorcycle as compared to a standard vehicle. With this antenna and the excellent music, sports, and talk of XM or Sirius Satellite Radio you are sure to enjoy any bike trip! See what customers are saying about our SIRIUS XM motorcycle antenna