Cargo Floor Riser for Rivian R1S

$32.95
$32.95
$32.95
Availability: ✓ In stock
Fits: ✓ All R1S ✕ Not R1T

Rivian Owner Made

This product is created by a Rivian Owner for Rivian Owners

Community Feedback Incorporated

This product incorporates feedback received by the online Rivian Owners community

Tested in a Rivian Vehicle

This product has been explicitly designed for and extensively tested in a Rivian

Made in the USA

Most or all of this product is Printed or Made in the USA (electronics excluded)

Ships from OpenSourceEV

Shipments of this product come directly from OpenSourceEV

Design is Open Source

The design of this product has been published publicly for remix and free personal use
We ensure shipments with this item are 100% carbon-neutral.

Cargo Floor Riser for Rivian R1S

The OpenSourceEV Parts Cargo Floor Riser fixes one of the most overlooked annoyances in the Rivian R1S cargo area. When the load floor is set to its upper position, it sits flush with the third row seats but slopes downward toward the rear of the vehicle. This three-piece kit corrects that slope and gives you a truly level load floor. Designed by Kelvin Lee, manufactured and supported by OpenSourceEV, and tested in Rivian vehicles.

Folds flat for easy storage when not in use. No tape, no adhesives, no permanent modifications.

What's Included

  • Left side riser assembly
  • Right side riser assembly
  • Center riser assembly
  • 2x M6 1.0 x 55mm black steel flathead Allen bolts
  • 2x M6 black steel square nuts

Key Features

  • Levels the upper-position cargo floor from front to rear -- no more slope toward the tailgate.
  • Three-piece design assembles with a 4mm Allen wrench. Tighten until snug.
  • Places in under 60 seconds with no tape, adhesives, or permanent modifications.
  • Folds flat for storage when not in use.
  • Printed from ASA for UV resistance and temperature resilience up to 300 degrees F.
  • Manufactured, sold, and warranty-supported by OpenSourceEV Parts. Made in the USA.
  • Open source design available on Printables.
  • Fits Rivian R1S. Not compatible with the Canvas Back.

Installation

  1. Assemble the three riser pieces using the included M6 bolts and square nuts. Tighten with a 4mm Allen wrench until snug.
  2. Set the R1S load floor to the upper position.
  3. Place the assembled riser at the rear of the cargo area. No tape or fastening required.
  4. To store, fold flat and set aside.

Customers praised this cargo floor riser for creating a level cargo area, with reviews noting it "works perfectly" for dog crates and camping. The sturdy, foldable design features ventilation openings ideal for coolers. Most appreciate the quick shipping and excellent fit. Some suggest adding adhesive strips, as risers can slide when lifting the floor.

  • 5 stars: 16 (89%)
  • 4 stars: 2 (11%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
C
ChicagoYeti
Works great!

These things are great. I added some double-stick velcro to them and to the cargo area so that they would stay in place when raising and lowering the cargo area floor. Love having the flat and level cargo area (my 3rd rown is almost always down). Also leaves some extra space underneath. (BTW ... highly recommend adding long drawer pulls to the OEM cargo bin)

A
Alanna L.
Perfect solution for my Variocage

I was very stressed about the inability of the seats to fold flat when I purchased this vehicle. I travel with my dogs in a large crate in the back and was looking at what modification I could do to make this work. Luckily some internet and social media searching led me to this product. It works perfectly for my needs. Was shipped quickly and I am very happy with it. Only thing I woukd love to see would be a piece that went the length of the gap to keep dirt and sand from getting in the lower storage area(which I can't access with the crate set up anyway). Thank you for making this!

P
Paulette
This worked perfectly

This worked perfectly. I used it to level the back of my Rivian for dog crates.

R
RivianCamping
Quick shipment and works great

Quick shipment and works great. Having the level cargo compartment lid with openings that ventilate the lower compartment means I can run my Icecoo freezer underneath and not worry about overheating. Also useful when car camping in the Rivian for a nice level mattress base from head to toe.

A
Anonymous
arrived quickly

arrived quickly. packaging excellent. fits perfectly. priced appropriately. happy with experience and product.

H
Heidi D.
Works great

Works great. I love having the floor level and it leaves room for air to flow for the 12v cooler I use in the spare tire space. I added some Velcro strips to keep everything in place.

W
W.P.

Nice

C
Chris E.
What a great product! Well made and compact.

What a great product! This is well made, solid and does NOT move when the cargo floor is sitting on it. I use it to keep my dog crate level and it's perfect. It's also small enough to hide under the cargo floor when it's not needed but I find myself just leaving it there more often just to keep the cargo floor level.

J
Joe
work great so far

work great so far. Level the floor nicely

S
Steve
Perfectly raises the rear cargo floor to be level

Perfectly raises the rear cargo floor to be level with the two rows of golded down rear seats. We used the kit to make the back level for sleeping/camping for 4 days. Easy to figure out, strong, light weight, and folds up to store easily.

L
Laura H.
Canvasback Cargo Liners

Great product and easy to install. I have the Canvasback cargo liners that are individual pieces that cover the back of the second row and the entire cargo area with the 3rd row down in my R1S with two large Ruffland Crates installed. These pieces installed just fine. No issue with having the Canvasback liner.

c
cynthia t.

Fit perfectly, Does the job of leveling the cargo area

C
Christian U.
Cargo Floor Risers Rise to the Occasion!

Very cool kit - easy setup and install. Only one recommendation - identify a way to keep them in place when lifting the cover to access items underneath. Otherwise, works as advertised!

W
Willard G.
Good can be great

The product does exactly what it is designed to do. I only wish that it had some adhesive strips to keep them in place. When you lift up the cover the product slides off.

J
James G.
Nice Adition

When thinking of transporting our new puppy in my Rivian I wanted to ensure the floor was as flat as possible, so if there were accidents, nothing would flow down onto the carpet. This product is fantastic leveled out the back end and provided me piece of mind.

T
Timmy H.
Great addition for camping!

Great product to have for camping trips where we sleep in the back of the R1S. Very well made, and they're easy to fold and store away when not needed.

S
Seth H.
Nice addition

Gives a great flat load floor, sturdy design, folds up for easy storage. Seems pretty strong, haven’t had any issues with loading heavy items up on it. The very back flat center riser always topples over when accessing the under-trunk storage area, not sure how to prevent this, but it would be nice if it stayed put somehow. Not a big deal, either way, just a thought.

V
Vern M.
Elegant solution.

Love this dohickey. The Rivian may be the best car I've ever driven, but it’s not perfect. The rear cargo panel does not set flat. I have dogs that need a flat area in the cargo area for two large crates.
The Cargo Floor Riser is the perfect solution. The risers are simple, solid, and inconspicuous. The crates now rest on a solid, flat surface so the don't "rock" when we drive. The dogs are happy so I'm happy. This an elegant solution to a problem that could have been designed by Rivian in the first place.

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