GEN 1 R1T and R1S only.  Have not confirmed fitment on 2025 Models

Before ordering please verify your factory horn location to ensure proper fitment and select the correct option to purchase.  See below for how to determine which factory horn you have.

With a vehicle as unique as the Rivian, you need a horn that matches its road presence. Unfortunately, the factory Rivian horn is kind of missed the mark.  Now you can get a big air horn sound with this Auxiliary Horn.

Our Horn Upgrade Kit offers a deeper, louder sound that gives you the added safety and the respect you deserve while driving your Rivian. This complete, turn-key Horn Kit allows you to leave the existing Rivian single horn or factory dual horns in place and operational. So ultimately, you get a louder, deeper Air Horn Style with added dual-tone sound!

The kit includes the mounting bracket, designed specifically for Rivian R1S and R1T, relay, wiring harness, Y-connector, and all necessary hardware. The Horn Upgrade Kit is mounted in a recessed area under the front trunk.

We offer upgrade kits designed for both driver or passenger side factory horn locations.

• Factory dual horns or single driver side uses the standard kit.
  
• Factory single passenger side horn requires the additional passenger harness.
  

Please verify your horn's location to ensure proper fitment and select the correct option to purchase. Easiest way to determine if you have a driver or passenger side horn is to look through the bumper grille (see photo in gallery).  If you have a horn opening on the drivers side then the standard kit will work (top photo). If both driver and passenger side has a solid plastic cover, then you need to add the passenger wire harness extension (bottom photo).