An extended-range sun visor assembly includes a rail and a sun visor panel. The sun visor panel is releasably mounted to the rail at an inboard sun visor panel end and slidably mounted to the rail at an outboard sun visor panel end. The rail may be fixed at opposite ends thereof to a vehicle roof panel and/or headliner. The sun visor panel is releasably mounted at the inboard end by a snap fit retainer, and slidably mounted at the outboard end by a shaft coupler configured to slide along a longitudinal axis of the rail. The shaft coupler pivots or swivels around a shaft coupler vertical axis.