Abstract: A The airbag suspension system of the invention replaces the stock coil-over shock. The system provides (i) an airbag disposed in essentially the same location as the stock coil-over shock being held in place by an upper airbag mount that attaches to the rear of the motorcycle main frame and a lower airbag mount that attaches to the swingarm; (ii) a shock absorber mounted to the upper airbag mount and to the swingarm via a progressive relay arm linkage similar to the linkage used in modern sportbike suspension; and (iii) an onboard air compressor and switching unit that allows the motorcycle operator to adjust the pressure to the air bag suspension system while the motorcycle is stationary or in motion.