MH Instruments Rumble Road Premium Amplified Stereo Speakers Black With 1" Mounting Hardware 131 High-output, high-fidelity stereo speaker system produces crisp, powerful sound even at highway speeds Attractively packaged in lustrous chrome or black spotlight shells to enhance the look of most any motorcycle Can be installed on handlebars, crash bars, forks or other locations Work with any portable MP3, personal stereo or satellite radio Feature standard miniplug headphone jack