A derailleur gear system offers excellent efficiency and, with multiple chainrings at the front, provides a wide range of gear ratios with closely spaced gears. However, these benefits come at the cost of increased wear, susceptibility to dirt, and the absence of a coaster brake. In contrast, a hub gear system is low-maintenance, can be shifted while stationary. However, it cannot be shifted under load, and the chain may require occasional tensioning.
The Lil’Buddy and Lil’Missy are equipped with a derailleur gear system while the Ruffian and Biggie are equipped with an enviolo hub with a stepless shifting systems.