3-Cup Swing-Out Car Holder Extender: Phone Slot, Truck SUV RV Mug Holder

Tired of your coffee mug not fitting your car cup holder?

This 3-cup holder expander lets you use mugs with handles, large tumblers, and multiple drinks at the same time, all securely while driving.

Designed for real-world use in trucks, SUVs, and everyday vehicles.

One cup position swings out sideways, allowing space for up to three cups at once — including standard handled coffee mugs that normally won’t fit in vehicles.

☕ Features & Benefits

✔ Allows you to use up to 3 cups in your vehicle

✔ Swing-out design for extra space and flexibility

✔ Side openings for coffee mugs with handles

✔ Integrated cell phone slot for organization

✔ Made from durable, heat-resistant PETG (automotive friendly)

✔ Stable fit designed for daily driving

Cup Size Compatibility

Oversize Coffee mug / handle slots: up to 3-3/4” diameter

Smaller cup holder: up to 3-3/16” diameter

Slot is 3-3/4"L X 1/2"W x 3"D

Fits most cars cup holder. Stud for cup holder is 3.25 Dia X 2.70 inch long

Total over All length - 8-3/4"

If you’re unsure about fit, feel free to message me with your cup or vehicle details — I’m happy to help.

Want something slightly different?

We offer custom modifications for an additional

Examples of customization requests include:

• Adjusting cup holder diameter

• Adding or removing handle slots

• Changing slot width for larger mug handles

• Minor design adjustments for specific vehicles

Made to order

Ships in 3–5 business days

Each piece is printed, inspected, and packaged carefully before shipping.

Material & Quality

This item is made from PETG, a material chosen for automotive use due to its:

Better heat resistance than PLA

Stronger impact durability

Long-term stability for everyday use

Minor surface texture variations are normal with 3D-printed items and do not affect performance or durability.

Important Notes

Designed to fit most standard vehicle cup holders

Not affiliated with or endorsed by any vehicle manufacturer

Cup holders, mugs, and phones shown in photos are not included

Questions or Custom Requests?

Custom orders cannot be returned unless there is a manufacturing defect.

Have a question about fit, color, or customization?

Send me a message — I typically respond quickly and I’m happy to help.

© 2026 Revolv3D — Original design. Reproduction, scanning, remixing, or resale of this design in any form is prohibited without written permission.