Seat Back Attachment System

One mount. Every need. Zero tools.

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Tablet mounted in Seat Back Attachment System holder on Rivian front seat alternate view
Seat Back Attachment System small cup holder holding 20oz soda bottle on Rivian front seat
Seat Back Attachment System hook attachment installed on Rivian front seat
Seat Back Attachment System large cup holder holding 40oz water bottle on Rivian front seat
Tablet mounted in Seat Back Attachment System holder on Rivian front seat alternate view
Seat Back Attachment System small cup holder holding 20oz soda bottle on Rivian front seat
Seat Back Attachment System hook attachment installed on Rivian front seat
Seat Back Attachment System large cup holder holding 40oz water bottle on Rivian front seat

Why OpenSource EV?

100% Open Source Designs

We provide publicly accessible 3D models for each product that we design, produce, and sell, at no cost.
Always Free Shipping

Orders over $50 ship for FREE domestically or for only $9.99 flat-rate to Canada
Premium Construction

Manufactured parts are made from ASA for superior durability, excellent UV resistance, and temperature resilience up to 300° F.
Always Sustainable

Products are manufactured using renewable energy like solar and wind plus shipping uses recycled materials and is carbon offset.
Made in the USA

All products manufactured by OpenSource EV Parts are made in Pittsburgh, PA USA

New & Updated

Seat Back Attachment System
from $13.95
from $13.95
Braided Charging Cable
$5.95
$5.95
EVO Phone Mount V4.5
from $14.95
$14.95
from $14.95
NextGen Phone Mount V2.5
from $14.95
$14.95
from $14.95

best sellers

Stealth Phone Mount V1.5
from $21.95
$21.95
from $21.95
Cargo Floor Riser for Rivian R1S
$32.95
$32.95
$32.95
NextGen Overhead Glasses Holder
$9.95
$9.95
$9.95
Hitch Cover Thumbscrew V2 (Pair)
$6.95
$6.95
$6.95
NextGen Aux Cupholder Kit V2
$15.95
$15.95
$15.95
BeverageStation Kit V2
from $19.95
$19.95
from $19.95
BeverageStation Mini Kit V2
$17.95
$17.95
$17.95
Hitch Receiver Storage Box V2.5
$14.95
$14.95
$14.95

Our Favorites

Rangefinder Key Fob Surround - Gen 1
from $7.95
$7.95
from $7.95
Rangefinder Key Fob Surround - Gen 2
from $7.95
$7.95
from $7.95
Jack Point Cover
$4.95
$4.95
$4.95
Center Cap Mount R1T and R1S 21 Inch Wheels
$4.95
$4.95
$4.95
NACS + L2 Adapter Holder V1.5
$15.95
$15.95
$15.95
NACS Adapter Holder
$14.95
$14.95
$14.95
Cable Hook for Rivian OEM Mobile Charger
$9.95
$9.95
Scosche OBD-II to USB Connector
$19.99
$19.99

center console upgrades

Camp Drawer
$99.95
$99.95
$99.95
Center Console Organizer V4
from $19.95
$19.95
from $19.95
Adjustable Center Console Divider
$19.95
$19.95
Ultimate MagSafe Charging Pad V2.1
from $39.95
$39.95
from $39.95

Creator Kits

Creator Kit - Phone Mounts (NextGen, Stealth, EVO)
$1.99
$1.99
Creator Kit - Seat Back Tablet Mounts or Hooks
$2.49
$2.49
Creator Kit - Gen 1 Aux Cup Holders
$2.99
$2.99
Creator Kit - Cargo Floor Riser for R1S
$3.99
$3.99

replacement parts

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Mounting Ball
$2.50
$2.50
Bolt Replacement
from $0.50
from $0.50
Nut Replacement
from $0.50
from $0.50
NACS Adapter Cover
$1.95
$1.95
Seat Back Attachment System Mounting Plate
$6.95
$6.95
Seat Back Attachment System 17mm Ball Mount
$6.95
$6.95
Seat Back Attachment System Retaining Pin
$0.95
$0.95
Seat Back Attachment System Hook
$3.95
$3.95

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