This exciting new J&M 250w fairing speaker amplifier kit has been design specifically for use in the 2006 - Now Harley® RoadGlide fairing, with the Harley HK radio. (may also work with the 1998-2005 Harley RoadGlide fairing/radio, under the certain conditions mentioned in "Extended Description")This is a full range class G amplifier and is spec’d at 125watts RMS per channel, both channels driven, continuous into a 2 ohm load @ 14.4vdc, 70watts RMS continuous into a 4 ohm load.Amplifier mounts to the custom made metal mounting bracket system.Custom made plug-n-play wiring harnesses are included with this amplifier kit, top quality heavy gauge power/ground wires are used for the fused battery connection, along with all necessary mounting hardware & complete installation/operation instructions.Amplifier itself measures 7 ¼” X 4 ¾“ X 1 ¾”.