J&M's ROKKER® XXRP Series ! ---- THE world’s MOST POWERFUL 4-ch amplifier for your Harley Bagger audio system.

4-ch 630w amplifier kit for 2014-2020 Harley® Ultra or Ultra Ltd (NOT for CVO) with stock Harley 6.5GT or new GTS touch-screen radio, (NO SPECIAL FLASH needed).

This kit is put together with a REFURBISHED (used/repaired) amplifier component, but all other parts of this kit, including the mounting bracket, wiring harnesses etc are all brand new and the entire kit is covered by J&Ms 2-year warranty.

Full range class D amplifier, spec'd at 157.5 watts RMS per channel X4, (630w total) into 2-ohm load @ 14.4vdc, (Manually selectable on the amplifier itself for a 2-ohm or 4-ohm speaker load) properly shielded against RF interference into the AM or FM radio.

Amplifier uses advanced digital switching power supply technology to dramatically reduce the 12v current demands on the motorcycle electrical system.

Amplifier mounts to custom made stainless steel 2-piece bracket system, to provide solid and secure mounting inside the Ultra fairing.

Amplifier is dialed-in for this specific Ultra speaker configuration, to provide maximum highway performance. (Updated ROKKER DSP amplifier gain/frequency settings as of 01-28/2021)

To alter these DSP settings using the internal programming dongle already built into this new amplifier, (USB computer connection cable included) our specific custom amplifier programs are now available as a consumer download from the J&M website along with the custom Bike-Builder’s-App for those who want to fine tune their own specific amplifier adjustments.

Custom made plug-n-play wiring harnesses are included, along with heavy gauge power/ground wires for the fused battery connection, all necessary mounting hardware & complete installation/operation instructions.

Amplifier itself measures 8 1/4” Long X 5 1/8” Wide X 1 5/8” Tall.