57x 〈Authentic — 2027〉

The cab has been completely redesigned to feel more like a luxury vehicle than a traditional work truck:

The is the most advanced on-highway truck ever built by Western Star, designed to combine the brand's legendary "tough" DNA with modern efficiency and safety. Introduced as the final member of the X-Series lineup, it replaces the older 5700XE and is aimed specifically at owner-operators and small fleets.

: The truck is powered exclusively by Detroit engines, including the DD13 Gen 5, DD15 Gen 5, and DD16.