The present disclosure relates to an article carrier system particularly adapted for use with a pickup truck. The system employs a first pair of support tracks secured to a roof surface of a pickup truck, and a rear spoiler portion coupled to each of the first support tracks and extending therebetween adjacent a rear area of the roof surface. A second pair of support tracks is secured to a pair of truck bed sidewalls. A combination spoiler/support subsystem is supported from the second pair of support tracks and is adjustably positionable to provide a variable spacing between the rear spoiler portion and the spoiler/support subsystem, to thus tailor the system to support articles of various lengths thereon. The rear spoiler portion and the spoiler/support subsystem provide an appearance of a single, integrated spoiler when positioned closely adjacent one another.