This complete custom speaker/amp installation kit has been designed for the 2014-2022 Harley® Ultra, Ultra Ltd or Tri-Glide. ROKKER speakers are spec'd at 2 ohms impedance and 200 watts maximum input (130w RMS - 91db sensitivity), these speakers provide excellent on-highway performance. Speaker drivers feature lightweight waterproof woven-fiber cones with super-rigid metal basket and a high-density lite-weight Neodymium magnet structure with integral high-output PEI tweeters. Mounting hole pattern and spade electrical connections are exactly the same as the factory specification, this is a total plug-and-play no-modification solution complete with easy to follow installation instructions. The new ROKKER 4-channel 400w amplifier kit has been designed specifically for use in the 2014-2022 Harley® Ultra, Ultra Ltd or Tri-Glide fairing with the stock Harley 4.3 Std, 6.5GT or GTS touch-screen radio, and is tuned for the stock Harley flash, NO SPECIAL FLASH needed. This new amp kit will also connect to the Sony 7000 or Fosgate replacement HD radios with direct RCA-RCA connections (ONLY) and is easily adjustable in the field with a small screwdriver. This is a full range class D amplifier and is spec’d at 100watts RMS per channel X4 channels, (400w total) driven continuous into a 2 ohm load @ 14.4vdc. Amplifier mounts to custom made stainless steel 2-piece bracket system, to provide solid and secure mounting inside the fairing. Custom made plug-n-play wiring harnesses/RCA-RCA direct cable adapters are included with this complete audio kit, top quality heavy gauge power/ground wires are used for the fused battery connection, along with all necessary mounting hardware & complete installation/operation and tuning instructions. Amplifier itself measures 7 ¼" X 4 ¾" X 1 ¾".