More on Amazon.com : http://www.amazon.com/gp/product/B0022ZWNKG?tag=purrfectcatdi-20

Kuryakyn Dual Function Antenna for Tour-Pak - One Size

Enjoy all the range and clarity your AM FM and CB radio offer without the mile-high stock antenna
Compact and flexible antenna is only 17in long
Tuned for its specific mounting location so no calibration is needed
Kit Includes 1 Dual Function Antenna 1 Installation Instructions
Sold individually