Our Upper kit allows you to add the an additional RM1 speaker option to either our Stage 2, 3 or 4 kit. Including the mounting brackets and wiring harnesses, the installation is a snap to do. So if you decided to not go all-in the first time, you can now complete the package and cruise in style.
RFYXZ-UPPER is compatible with the YXZ-STAGE2 and YXZ-STAGE3. It is possible to add this kit to the YXZ-STAGE4, but it must be powered by the built-in amplifier on the PMX source unit. Estimated Installation Time: 1 HOUR