New AR210 owner - a couple questions about mods

[Maineiac]

Hello! Long time lurker, first time poster. Today I sealed the deal on a 2020 AR210 in blue that I will pick up next week. I’ve already purchased the mooring cover and the dual battery kit but there’s a couple other things I need to add.

• Wakeboard racks. What diameter is the tube on the 2020’s? I’m looking for a quality set that is cheaper than the expensive OEM racks
• I need some details on the stock infinity head unit and stock speakers...
• What size and wattage are the speakers?
• How many channels can the head unit drive?

I would like to install tower speakers and possibly drop in replacements for the stock speakers. My goal is to be able to hear the music while cruising or wakeboarding but I don’t need anything crazy. I assume I’d need an amp but maybe not?