Kit includes a full range class D audio amplifier, spec'd at 200watts RMS per channel X2, (400w total) into 2-ohm load @ 14.4vdc with dimensions of 7-1/4" x 4-3/4" x 1-3/4" Amplifier mounts to custom made stainless steel 2-piece bracket system, to provide solid and secure mounting inside the fairing J&M's ROKKER XXR series 6.71" speakers designed as exact size component/replacements for the stock 6.5" Harley fairing speakers Spec'd at 2 ohms impedance and 300 watts maximum input (200w RMS - 91db sensitivity), speakers provide the ultimate in raw audio power and include the new custom grills with built-in high-output tweeters Lightweight waterproof one-piece woven-fiber driver cone with super-rigid metal basket design High-density lite-weight Neodymium magnet structure, specially coated to maintain flux-strength integrity even at extreme operating temperatures High efficiency VENTED voice-coil for improved cooling when operating at high volume levels for extended periods 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. Custom made plug-n-play wiring harnesses included, along with heavy gauge power/ground wires for the fused battery connection, all necessary mounting hardware & complete installation/operation instructions.. AMP 400W2SPK 15-20 RG GLD