SoonishEV Subwoofer Enclosure Box & Wiring for Gen 1 & 2 Rivian R1T

Rivian Subwoofer Installation Kit

We like to call this "The Tubthumper."

As car guys who like nice sounding audio, even the Meridian systems in our launch edition R1Ts felt... lacking. As it turned out, the anemic OEM subwoofer comes installed in a plastic box, and sorely lacks wattage.

After some finagling, we've come up with this MDF Felted box that makes a WORLD of difference to your truck's audio.

IMPORTANT NOTE: Your truck MUST have a subwoofer for this kit to work. This means "Meridian" or "Rivian Premium Audio". If you have just the stock audio system, it lacks the needed outputs and wiring for this kit to be installed.

With our kit, you end up turning DOWN the bass in the software-controlled EQ, which allows the speakers in your doors to focus just on the mids and highs, and lets the New & Improved subwoofer handle the rest.

This complete wiring and installation kit integrates seamlessly with your vehicle's OEM system—no cutting or splicing required.

What's Included:

• Custom-fit subwoofer enclosure: .35 cubic ft 
• OEM signal adapter (plug-and-play connection)
• 18-foot power cable with fuse
• Ground wire and all connectors
• Complete speaker wiring

What You'll Need:

• 8" subwoofer (JL Audio 8W1V3-4 recommended)
• Compact amplifier (We recommend the Kicker 46CXA4001)
• Remote control knob (We recommend the Kicker 46CX)
• Basic hand tools
• Sound Deadening: https://amzn.to/4qz7avt

Key Features:

• Works with Gen 1 and Gen 2 Rivian R1T vehicles!
• Retains factory storage bucket
• Professional-grade components
• Detailed video installation guide can be found here!

NOTE: Your first time doing this, you can expect it to be a 2-3 hour long install process. With practice, you can get it done quicker!