The Retro-Fit shower system transforms an existing single showerhead into bathing experience by accommodating both a showerhead and a hand shower. Designed to replace single showerhead installations that use a concealed pressure balance valve, the wall-mounted unit comprises a 17 11/16 Inch horizontal shower arm that swivels, a gliding support bar for a hand shower, a 59 Inch metal shower hose and a built-in diverter that allows users to switch between use of the showerhead and hand shower both can also be used simultaneously.