The stainless steel Kargo is a collaboration between California-based Tallac Design and King Cage, the latter of which produces bidon carriers out of a garage in Durango, Colorado. The cage’s oversize mounting brackets accommodate a ballistic nylon storage bag—you can choose between the 7.5-inch Kargo Road, which is designed to hold a 700c tube, or the 9.5-inch Kargo Mountain, which has space for a 29-inch one. There’s also room for a mini tool or small flat-repair kit.
The installation process is slightly more complicated than for a traditional cage. Before screwing in each (included) bolt, you slide it through the mounting bracket and a small piece of webbing. For best results, you’ll want to have a hex wrench set on hand; your minitool might be too bulky. Load up your cargo bag, slide it behind the cage, and snap it into the webbing; this prevents it from shifting during your ride. Tallac recommends mounting the Kargo to the down tube, but depending on your frame size and configuration, you may be able to make it work on the seat tube, or even on the underside of the down tube.
Although the Kargo Cage is a bit harder to access than a seat pack (you need to remove your water bottle in order to unzip the bag), it offers several advantages: It won’t rattle or swing during hard pedaling, the bag easily slips into a jersey pocket when you’re off the bike, and it won’t chafe against your brand-new pair of bibs. Both the cage and bag are made in the US; there’s also a titanium version, which costs $90.—Emily Furia