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 Top-quality speaker grills, adapter rings and bracket hardware are included for secure and clean mounting The new ROKKER 2-channel 200w amplifier has been design specifically for use in the fairing with the Harley HK Radio, Harley RSI radio and Jensen, Aquatics or Fosgate replacement HD radios with direct RCA-RCA connections 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 instructions Amplifier measures 6-1/2ö x 4-3/4ô x 1-3/4ö. AMP 200WSPKRS 6.5 98-13SG