J&M Rokker Stage 6 4-Channel Amplifier & Speaker Kit For Harley Electra Glide Ultra Classic / Ultra Limited The J&M Speaker and Amplifier Kit offers a superb audio upgrade for Harley Fltr Road Glide owners. Engineered for simplicity and performance, this kit features a Rokker amplifier and speakers designed to transform your listening experience with increased volume and clarity. Installation is streamlined, thanks to a custom-made wiring harness and precision laser cut steel bracket, ensuring a smooth, secure fit. Elevate your ride's audio system easily with this comprehensive upgrade package. Features: Complete amplifier and speaker kit provides improved clarity and more volume Custom made plug and play wiring harness Laser cut steel amplifier mounting plate Tuned for stock HD flash eliminating a trip to the dealer Compatible with Oem: 4.3, 6.5Gt, or GTS touch-screen radio Compatible with aftermarket: Sound Stream HDHU.14si, Precision Power HDHU.14si, & Fosgate Pmx-Hd14 Speakers: Speakers utilize lightweight waterproof woven-fiber cones Super-rigid metal basket High-density neodymium magnets Integral high-output PEI tweeters Specifications: 400w RMS total (100w x 4) into 2-ohms at 14.4vdc Amplifier measures 7 X 4 X 1 . Speaker Size: 6.58 diameter Frequency response: 35-23kHz Sensitivity: 91db Maximum Power: 200 Watts RMS Power: 130 Watts Note: If your Harley infotainment radio was previously flashed to a different configuration from stock, (i.e., BoomI or Boom II) instruct your dealer to re-flash the radio back to 4-Speakers, Upper-Fairing, Rear-Pods, No-Amp using the Harley or other brand digital technician, prior to the installation of this complete kit.