How to Install a Back Seat Tablet Mount Anchor in Rivian

By Abstract Ocean | Tesla & Rivian Accessories | A Texas Co. est | Published: 2026-10-30

Category: Handleidingen

Learn how to install a back seat tablet or phone mount anchor in your Rivian R1T, R1S, or R2. Step-by-step instructions, common mistakes, and fitment tips.

Quick Answer

Install a back seat tablet or phone mount anchor in your Rivian by clamping it onto the hook behind the front seat, choosing the right ball mount size, and securing your device mount. This guide walks you through each step to avoid common mistakes.

Why the Hook Anchor Works for Rivian

The Rivian R1T, R1S, and R2 have a sturdy hook behind the driver and passenger seats. A dedicated anchor clamps onto this hook, giving you a stable mounting point without drilling or permanent modifications. This is especially useful for rear-seat passengers who want to watch videos or use a phone hands-free.

Because the anchor is sold individually, you can install one behind either front seat, or order two to cover both sides. The choice of ball mount size (17mm or 25mm/1"/B-size) lets you match the arm or mount you already own, so you don't have to buy a whole new system.

Choosing the Right Ball Mount Size

Before you start, check the ball mount size your device holder or arm uses. The anchor comes with your choice of a 17mm ball or a 25mm/1"/B-size ball. If you're unsure, measure the socket on your existing mount or refer to its manual. Picking the wrong size means the mount won't attach securely, so it's worth confirming before installation.

Also decide whether you need a charging cable option. If you plan to keep a tablet or phone charged during long trips, selecting the charging cable option during checkout can simplify cable routing later.

Installation Steps

Locate the hook behind the front seat: Find the hook on the back of the driver or passenger seat. It's typically near the top or middle of the seatback. Clean the area around the hook to ensure the anchor clamps securely without debris interfering. Make sure the hook is clear of any seat covers or accessories that could block the clamp.
Attach the anchor to the hook: Open the anchor's clamp and position it over the hook. Press it firmly until it snaps or tightens into place. The anchor should sit flush against the seatback. If it feels loose, reposition and try again. A common mistake is not pressing hard enough; the anchor must fully engage the hook to avoid slipping.
Select and attach the ball mount: Choose the ball mount size (17mm or 25mm/1"/B-size) that matches your device mount. Screw the ball mount onto the anchor's threaded post. Tighten it securely with your fingers or a wrench, but avoid over-tightening, which could strip the plastic threads. Verify the ball mount is the correct size before tightening; swapping it later requires loosening the anchor.
Mount your device holder: Attach your tablet or phone holder to the ball mount. Push it on until it clicks or locks into place. Give it a gentle tug to confirm it's secure. If your holder uses a set screw, tighten it to prevent rotation. A loose connection here is a common cause of device drooping; always test with a slight pull.
Test and adjust: Place a tablet or phone in the holder and adjust the angle for comfortable viewing. Drive a short distance and check that the mount doesn't vibrate excessively or shift. If needed, tighten the ball mount or reposition the anchor. If the mount wobbles, re-check the anchor's clamp and the ball mount tightness—both must be snug.

Product Facts

Back Seat Tablet/Phone Mount Anchor for Rivian R1T, R1S & R2: Anchors securely clamp onto the hook behind the driver or passenger seat and are made in the USA from 3D-printed, high-temperature PolyHex plastic with stainless steel fasteners. The clamp design and materials provide a stable, durable mount that won't loosen or deform under the weight of a tablet or phone.
Back Seat Tablet/Phone Mount Anchor for Rivian R1T, R1S & R2