Slim Stowable Cup Holder Expander for Rivian R1S and R1T

📷 Image redacted — claim this model to add your own media OpenSourceEV Parts designs, produces, and shares 3D‑printed parts for Rivian EVs. Staying true to our open‑source mission, every product we create comes with free STL files so anyone can remix, customize, or print at home for little to no cost. We’re here to empower the Rivian owner community by making DIY customization simple, affordable, and accessible — backed by over 5,000 downloads on our Printables page and our new low‑cost, free‑shipping Creator Kits available on our website. And if you’re considering a Rivian R1S or R1T, you can receive up to $500 in Rivian Gear while supporting our mission of open‑source enhancements by using our Rivian Referral Rewards code: ROBERT1265188 . You enter this code when putting your deposit down on your Rivian. Details are available here . +++ The OpenSource EV Parts Slim Stowable Cup Holder Expander for the Rivian R1S and R1T is the easiest, most functional way to hold oversized beverages in your vehicle. It adapts the stock 3.2" cupholder to a 3.66" cupholder -- this fits common containers such as the Nalgene 32oz and 40oz, and the Hydro Flask 32oz and 40oz bottles. There is a Rivian-specific feature that make it better than more general products that do the same thing -- it's slimmed down sides. Because it's thoughtfully shaved down, it stores easily in a door pocket when not in use. (both in the front and rear doors) Additionally, it allows two of these to be positioned side by side in both the front and rear cupholders, and for bottles to be installed without deflection. The two oversized supports hold bottles secure both left to right and front to back at angles nearing 90 degrees. We print and sell this in ASA, but ABS and PETG should work well too. We strongly suggest that you use a high-quality PETG if that is your material of choice and store it not in direct sunlight to eliminate deformation. (PLA is a no-go because of this) This remix is designed to print without supports in most cases. Available for purchase here: https://opensourceev.com/products/cup-holder-expander-v2