A multi-tower modular dispensing system including at least a first dispensing head and a second dispensing head at a counter, a transfer unit located remotely from the counter, piping extending from the transfer unit to the counter, the transfer unit including a centralized ingredient system having a plurality of beverage ingredient sources, the centralized ingredient system configured to supply beverage ingredients to the piping for the dispensing of a first beverage at the counter, the piping including a main micro bundle, the main micro bundle including at least two separate beverage ingredient lines.