- Thanks to the TWIST bike base, the bottle cage is a thing of the past. Due to its flat and small design, it is perfectly integrated into the bike frame without standing out. It is easily attached with two screws to all regular bike mounting threads. Even the smallest bike frames can now be fitted with a bike bottle due to the cage-less magnetic system.The advantages in a nutshell -Fits all standard bottle cage thread inserts-Weighs only 16 g / 0.56 oz-Fits all TWIST modules