The Topeak BackLoader Wishbone Bike Bag Attachment is an anti-sway saddle mount engineered for bikepacking enthusiasts who demand stability, balance, and durability. Constructed from premium aluminum alloy, stainless steel, and engineering-grade polymer, the Wishbone mount keeps rear seat bags rigid and secure, eliminating side-to-side movement on rough trails. Its twin-bar design not only stabilizes your load but also accommodates two additional bottle cages, offering extended hydration for long-distance adventures. Compatible with Topeak BackLoader bags under 18 cm (7.1 in) wide, this mount provides both strength and versatility for demanding touring and gravel riders.