The MPAK13CX kit starts with our MOTO720 four-channel amplifier. Capable of delivering up to 180 watts per channel, this amplifier was designed to make your bike’s stereo sound crystal clear, even at 70+ MPH. The sloped top of the amplifier allows it to fit under the stock fairing, and its physical design helps to ensure the amp won’t shut down, even when you leave the volume cranked for hours. Don’t let yourself be fooled by imitators – this amplifier has that detailed and accurate, low-distortion sonic signature that has made ARC Audio the choice for music lovers, enthusiasts, and riders around the world. Designed for the motorcycle environment, the MOTO720 boasts an efficiency rating of over 96%! What does this mean to you as a motorcycle owner? More of the power from your motorcycle’s electrical system is fed to your speakers instead of converted to heat in the amp, so you can play your music louder and longer. ​ The MPAK13CX comes with the MOTO CX6 speakers offering a warm, rich, and powerful sound. Designed specifically for motorcycle and powersports applications, these speakers are built with UV-resistant materials that can stand the test of time. Each MPAK13CX kit includes speaker mounting adapters that make installation into the factory speaker locations easy, without the need for any modifications to your motorcycle. ​ ARC Audio works directly with Harley-Davidson dealers to ensure our kits are designed with OEM-compatible, high-performance cables and connectors that make it easy for you or your installer to complete the installation. This kit includes all the wiring you need to connect the MOTO720 amp to the radio and the new speakers. No wiring on the bike needs to be modified. Period. Your classic touring machine can be returned to stock at any time with no traces of it ever having been upgraded. ​ If you are looking to take your audio system to the next level, add the ARC Audio PSM digital sound processor to your kit (sold separately). The PSM will give you and your technician the ability to fine-tune the sound to your liking. The result is a system that is capable of delivering your music just the way you like it. ​ Note: Depending on the speaker and DSP combination you choose, the PSM may come in a separate package from the amp and speakers.