The phrase denotes a specific outboard motor model produced by Mercury Marine. It identifies a particular engine configuration characterized by its horsepower (150), series designation (XR2), and aesthetic branding (“Black Max”). This nomenclature allows for precise identification and differentiation from other Mercury outboard models.
This engine type gained popularity due to its balance of performance and reliability. The 150 horsepower rating offered substantial power for various boating applications, while the XR2 series was known for enhancements in design. The “Black Max” branding further contributed to its appeal, often associated with performance and a distinctive visual identity. Historically, these motors were prevalent in recreational boating, powering a range of vessels from fishing boats to runabouts.