Bottle holder adapter made of lightweight polycarbon. The bottle holder holes in the frame can be moved 1.5 to 4.5 cm with the universal CAGE SHIFTER+. Thanks to its flat design, the practical adapter made of lightweight polycarbon is integrated discreetly into the frame. Once mounted, the bike bottle holder can be easily attached to the CAGE SHIFTER with two screws. Universal mounting system almost anywhere on the bike. The side brackets made of soft plastic also provide additional mounting options almost anywhere on the bike. With paint-friendly Velcro straps (included), not only bottle holders but also replacement inner tubes, tools or pumps can be attached at almost any position on the bike.