Article of footwear with removably secured mechanical cushioning

An article of footwear comprising:

• an upper having an internal volume adapted to receive a foot of a wearer;
• a sole structure secured to the upper, the sole structure including:
• a chassis plate provided within the upper the chassis plate comprising a plurality of threaded anchors;
• a midsole removably secured to the chassis plate via plurality of threaded bolts extending therebetween, each threaded bolt of the plurality of threaded bolts extending through a corresponding aperture in the midsole and being threadably engaged with a different one of the plurality of threaded anchors, the midsole positioned such that a portion of the upper extends between the chassis plate and the midsole;
• and
• the midsole further comprising:
• a mechanical cushioning structure having an upper plate coupled with a lower plate, the upper plate including the plurality of apertures through which the plurality of threaded fasteners extend, the lower plate comprising an anterior end portion, a posterior end portion, and a central portion disposed between the anterior end portion and the posterior end portion;
• wherein:
• the central portion of the lower plate is spaced apart from the upper plate;
• at least one of the anterior end portion or the posterior end portion of the lower plate is secured to the upper plate;
• and
• an outsole tread element is removably secured to a ground facing surface the lower plate.