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CURT 18321 Rooftop Cargo Carrier Bag XL
Budget rooftop cargo bag for occasional trips
Last reviewed: April 2026
Weather-resistant rooftop cargo bag, 21 cu ft.
Price may vary. Prices and availability are subject to change.
At a glance
Quick Specs
Why this product
Why the CURT 18321 Rooftop Cargo Carrier Bag XL?
At 21 cu ft and 6 lbs, the CURT 18321 XL gives you serious volume at budget pricing from a recognized brand. For occasional road trips where you just need more space, it's practical. The downside? Weather-resistant construction won't hold up in sustained rain like Thule or Yakima bags, and 21 cu ft of soft bag creates significant wind drag and noise.
Detailed specs
Full Specifications
| Volume | 510 L |
| Waterproof Rating | Water Resistant |
| Requires Crossbars | No |
| Works Without Rack | Yes |
| Non-Slip Base | No |
| Reinforced Seams | No |
| Straps Included | Yes |
| Compressible for Storage | Yes |
| Storage Bag Included | Yes |
| Material | Polyester |
Best prices
Where to Buy
| Retailer | Price | Status | |
|---|---|---|---|
| Amazon US | Check price | Check availability | Check Price |
Disclosure: MyCargoRacks.com is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more
Disclosure: MyCargoRacks.com is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more
